./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi010.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/rfi010.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb4cb34f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/rfi010.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/rfi010.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-eb4cb34-m [2024-06-21 19:16:43,214 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-21 19:16:43,292 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-21 19:16:43,297 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-21 19:16:43,298 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-21 19:16:43,324 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-21 19:16:43,325 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-21 19:16:43,325 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-21 19:16:43,325 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-21 19:16:43,328 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-21 19:16:43,329 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-21 19:16:43,329 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-21 19:16:43,329 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-21 19:16:43,330 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-21 19:16:43,330 INFO L153 SettingsManager]: * Use SBE=true [2024-06-21 19:16:43,331 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-21 19:16:43,331 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-21 19:16:43,331 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-21 19:16:43,331 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-21 19:16:43,331 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-21 19:16:43,331 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-21 19:16:43,332 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-21 19:16:43,332 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-21 19:16:43,332 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-21 19:16:43,332 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-21 19:16:43,333 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-21 19:16:43,333 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-21 19:16:43,333 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-21 19:16:43,334 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-21 19:16:43,334 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-21 19:16:43,335 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-21 19:16:43,335 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-21 19:16:43,335 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 19:16:43,335 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-21 19:16:43,335 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-21 19:16:43,335 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-21 19:16:43,336 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-21 19:16:43,336 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-21 19:16:43,336 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-21 19:16:43,336 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-21 19:16:43,336 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-21 19:16:43,337 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-21 19:16:43,337 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-21 19:16:43,337 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-21 19:16:43,538 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-21 19:16:43,563 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-21 19:16:43,565 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-21 19:16:43,566 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-21 19:16:43,567 INFO L274 PluginConnector]: CDTParser initialized [2024-06-21 19:16:43,568 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi010.i [2024-06-21 19:16:44,575 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-21 19:16:44,760 INFO L384 CDTParser]: Found 1 translation units. [2024-06-21 19:16:44,760 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi010.i [2024-06-21 19:16:44,779 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bffe4a047/965e79b823f14bd88459b2b69a97f62d/FLAG264f67384 [2024-06-21 19:16:44,792 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bffe4a047/965e79b823f14bd88459b2b69a97f62d [2024-06-21 19:16:44,794 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-21 19:16:44,795 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-21 19:16:44,797 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/rfi010.yml/witness.yml [2024-06-21 19:16:44,869 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-21 19:16:44,869 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-21 19:16:44,870 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-21 19:16:44,871 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-21 19:16:44,874 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-21 19:16:44,875 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 07:16:44" (1/2) ... [2024-06-21 19:16:44,876 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50cfab47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:16:44, skipping insertion in model container [2024-06-21 19:16:44,876 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 07:16:44" (1/2) ... [2024-06-21 19:16:44,878 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7d13f395 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:16:44, skipping insertion in model container [2024-06-21 19:16:44,879 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 07:16:44" (2/2) ... [2024-06-21 19:16:44,880 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50cfab47 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:16:44, skipping insertion in model container [2024-06-21 19:16:44,880 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 07:16:44" (2/2) ... [2024-06-21 19:16:44,881 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-21 19:16:44,901 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-21 19:16:44,902 INFO L97 edCorrectnessWitness]: Location invariant before [L826-L826] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )y$w_buff0 >= 0LL && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p1_EBX) + (long long )x >= 0LL) && (0LL - (long long )y) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$mem_tmp) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p1_EBX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )__unbuffered_p1_EBX >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p1_EBX >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p1_EBX) - (long long )x >= 0LL) && (2LL - (long long )__unbuffered_p1_EBX) - (long long )weak$$choice0 >= 0LL) && (2LL - (long long )__unbuffered_p1_EBX) - (long long )weak$$choice2 >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff1 - (long long )y$w_buff1_used >= 0LL) [2024-06-21 19:16:44,902 INFO L97 edCorrectnessWitness]: Location invariant before [L827-L827] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )y$w_buff0 >= 0LL && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p1_EBX) + (long long )x >= 0LL) && (0LL - (long long )y) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$mem_tmp) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p1_EBX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )__unbuffered_p1_EBX >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p1_EBX >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p1_EBX) - (long long )x >= 0LL) && (2LL - (long long )__unbuffered_p1_EBX) - (long long )weak$$choice0 >= 0LL) && (2LL - (long long )__unbuffered_p1_EBX) - (long long )weak$$choice2 >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff1 - (long long )y$w_buff1_used >= 0LL) [2024-06-21 19:16:44,902 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-21 19:16:44,903 INFO L106 edCorrectnessWitness]: ghost_update [L824-L824] multithreaded = 1; [2024-06-21 19:16:44,942 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-21 19:16:45,245 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 19:16:45,255 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-21 19:16:45,372 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 19:16:45,421 INFO L206 MainTranslator]: Completed translation [2024-06-21 19:16:45,421 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:16:45 WrapperNode [2024-06-21 19:16:45,421 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-21 19:16:45,422 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-21 19:16:45,422 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-21 19:16:45,422 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-21 19:16:45,429 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:16:45" (1/1) ... [2024-06-21 19:16:45,459 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:16:45" (1/1) ... [2024-06-21 19:16:45,492 INFO L138 Inliner]: procedures = 174, calls = 38, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 136 [2024-06-21 19:16:45,493 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-21 19:16:45,494 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-21 19:16:45,494 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-21 19:16:45,494 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-21 19:16:45,502 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:16:45" (1/1) ... [2024-06-21 19:16:45,503 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:16:45" (1/1) ... [2024-06-21 19:16:45,519 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:16:45" (1/1) ... [2024-06-21 19:16:45,538 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-21 19:16:45,543 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:16:45" (1/1) ... [2024-06-21 19:16:45,543 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:16:45" (1/1) ... [2024-06-21 19:16:45,554 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:16:45" (1/1) ... [2024-06-21 19:16:45,560 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:16:45" (1/1) ... [2024-06-21 19:16:45,562 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:16:45" (1/1) ... [2024-06-21 19:16:45,569 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:16:45" (1/1) ... [2024-06-21 19:16:45,573 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-21 19:16:45,577 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-21 19:16:45,577 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-21 19:16:45,577 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-21 19:16:45,578 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:16:45" (1/1) ... [2024-06-21 19:16:45,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 19:16:45,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-21 19:16:45,601 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-21 19:16:45,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-21 19:16:45,631 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-21 19:16:45,631 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-21 19:16:45,631 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-21 19:16:45,632 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-21 19:16:45,632 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-21 19:16:45,632 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-21 19:16:45,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-21 19:16:45,632 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-21 19:16:45,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-21 19:16:45,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-21 19:16:45,634 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-21 19:16:45,727 INFO L244 CfgBuilder]: Building ICFG [2024-06-21 19:16:45,729 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-21 19:16:46,061 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-21 19:16:46,061 INFO L293 CfgBuilder]: Performing block encoding [2024-06-21 19:16:46,200 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-21 19:16:46,200 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-21 19:16:46,202 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 07:16:46 BoogieIcfgContainer [2024-06-21 19:16:46,202 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-21 19:16:46,204 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-21 19:16:46,204 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-21 19:16:46,206 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-21 19:16:46,207 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.06 07:16:44" (1/4) ... [2024-06-21 19:16:46,208 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2821400a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 07:16:46, skipping insertion in model container [2024-06-21 19:16:46,208 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 07:16:44" (2/4) ... [2024-06-21 19:16:46,208 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2821400a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 21.06 07:16:46, skipping insertion in model container [2024-06-21 19:16:46,208 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:16:45" (3/4) ... [2024-06-21 19:16:46,210 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2821400a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 21.06 07:16:46, skipping insertion in model container [2024-06-21 19:16:46,210 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 07:16:46" (4/4) ... [2024-06-21 19:16:46,211 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi010.i [2024-06-21 19:16:46,223 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-21 19:16:46,224 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-21 19:16:46,224 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-21 19:16:46,263 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-21 19:16:46,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 31 transitions, 70 flow [2024-06-21 19:16:46,313 INFO L124 PetriNetUnfolderBase]: 0/29 cut-off events. [2024-06-21 19:16:46,313 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 19:16:46,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 29 events. 0/29 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 42 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-21 19:16:46,350 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 31 transitions, 70 flow [2024-06-21 19:16:46,353 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 23 transitions, 52 flow [2024-06-21 19:16:46,366 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-21 19:16:46,372 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@b66164f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-21 19:16:46,373 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-21 19:16:46,377 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-21 19:16:46,377 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-21 19:16:46,377 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 19:16:46,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:16:46,378 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-21 19:16:46,378 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:16:46,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:16:46,398 INFO L85 PathProgramCache]: Analyzing trace with hash 358540720, now seen corresponding path program 1 times [2024-06-21 19:16:46,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:16:46,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566948823] [2024-06-21 19:16:46,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:16:46,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:16:46,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:16:47,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:16:47,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:16:47,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566948823] [2024-06-21 19:16:47,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566948823] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:16:47,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:16:47,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-21 19:16:47,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619871440] [2024-06-21 19:16:47,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:16:47,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-21 19:16:47,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:16:47,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-21 19:16:47,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-21 19:16:47,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-06-21 19:16:47,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 52 flow. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:16:47,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:16:47,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-06-21 19:16:47,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:16:47,516 INFO L124 PetriNetUnfolderBase]: 131/261 cut-off events. [2024-06-21 19:16:47,517 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-06-21 19:16:47,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 517 conditions, 261 events. 131/261 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1020 event pairs, 75 based on Foata normal form. 1/252 useless extension candidates. Maximal degree in co-relation 506. Up to 235 conditions per place. [2024-06-21 19:16:47,522 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 20 selfloop transitions, 3 changer transitions 0/29 dead transitions. [2024-06-21 19:16:47,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 29 transitions, 113 flow [2024-06-21 19:16:47,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-21 19:16:47,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-21 19:16:47,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 58 transitions. [2024-06-21 19:16:47,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6236559139784946 [2024-06-21 19:16:47,532 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 52 flow. Second operand 3 states and 58 transitions. [2024-06-21 19:16:47,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 29 transitions, 113 flow [2024-06-21 19:16:47,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 110 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-21 19:16:47,536 INFO L231 Difference]: Finished difference. Result has 31 places, 25 transitions, 71 flow [2024-06-21 19:16:47,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=71, PETRI_PLACES=31, PETRI_TRANSITIONS=25} [2024-06-21 19:16:47,540 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2024-06-21 19:16:47,540 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 25 transitions, 71 flow [2024-06-21 19:16:47,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:16:47,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:16:47,541 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:16:47,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-21 19:16:47,541 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:16:47,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:16:47,542 INFO L85 PathProgramCache]: Analyzing trace with hash 960277711, now seen corresponding path program 1 times [2024-06-21 19:16:47,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:16:47,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76455292] [2024-06-21 19:16:47,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:16:47,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:16:47,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:16:48,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:16:48,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:16:48,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76455292] [2024-06-21 19:16:48,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76455292] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:16:48,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:16:48,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-21 19:16:48,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546407970] [2024-06-21 19:16:48,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:16:48,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-21 19:16:48,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:16:48,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-21 19:16:48,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-21 19:16:48,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 31 [2024-06-21 19:16:48,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 25 transitions, 71 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:16:48,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:16:48,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 31 [2024-06-21 19:16:48,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:16:48,460 INFO L124 PetriNetUnfolderBase]: 150/285 cut-off events. [2024-06-21 19:16:48,460 INFO L125 PetriNetUnfolderBase]: For 59/59 co-relation queries the response was YES. [2024-06-21 19:16:48,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 653 conditions, 285 events. 150/285 cut-off events. For 59/59 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1101 event pairs, 68 based on Foata normal form. 2/286 useless extension candidates. Maximal degree in co-relation 641. Up to 258 conditions per place. [2024-06-21 19:16:48,464 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 25 selfloop transitions, 5 changer transitions 0/35 dead transitions. [2024-06-21 19:16:48,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 35 transitions, 157 flow [2024-06-21 19:16:48,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-21 19:16:48,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-21 19:16:48,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 72 transitions. [2024-06-21 19:16:48,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5806451612903226 [2024-06-21 19:16:48,466 INFO L175 Difference]: Start difference. First operand has 31 places, 25 transitions, 71 flow. Second operand 4 states and 72 transitions. [2024-06-21 19:16:48,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 35 transitions, 157 flow [2024-06-21 19:16:48,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 35 transitions, 154 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-21 19:16:48,467 INFO L231 Difference]: Finished difference. Result has 34 places, 27 transitions, 95 flow [2024-06-21 19:16:48,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=95, PETRI_PLACES=34, PETRI_TRANSITIONS=27} [2024-06-21 19:16:48,468 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 4 predicate places. [2024-06-21 19:16:48,468 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 27 transitions, 95 flow [2024-06-21 19:16:48,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:16:48,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:16:48,469 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:16:48,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-21 19:16:48,469 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:16:48,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:16:48,469 INFO L85 PathProgramCache]: Analyzing trace with hash -591056914, now seen corresponding path program 1 times [2024-06-21 19:16:48,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:16:48,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466218832] [2024-06-21 19:16:48,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:16:48,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:16:48,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:16:49,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:16:49,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:16:49,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466218832] [2024-06-21 19:16:49,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466218832] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:16:49,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:16:49,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 19:16:49,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418130425] [2024-06-21 19:16:49,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:16:49,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 19:16:49,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:16:49,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 19:16:49,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-21 19:16:49,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 31 [2024-06-21 19:16:49,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 95 flow. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:16:49,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:16:49,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 31 [2024-06-21 19:16:49,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:16:49,894 INFO L124 PetriNetUnfolderBase]: 147/280 cut-off events. [2024-06-21 19:16:49,895 INFO L125 PetriNetUnfolderBase]: For 176/176 co-relation queries the response was YES. [2024-06-21 19:16:49,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 716 conditions, 280 events. 147/280 cut-off events. For 176/176 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1074 event pairs, 47 based on Foata normal form. 2/281 useless extension candidates. Maximal degree in co-relation 702. Up to 244 conditions per place. [2024-06-21 19:16:49,896 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 29 selfloop transitions, 7 changer transitions 0/41 dead transitions. [2024-06-21 19:16:49,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 41 transitions, 205 flow [2024-06-21 19:16:49,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 19:16:49,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 19:16:49,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 88 transitions. [2024-06-21 19:16:49,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.567741935483871 [2024-06-21 19:16:49,900 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 95 flow. Second operand 5 states and 88 transitions. [2024-06-21 19:16:49,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 41 transitions, 205 flow [2024-06-21 19:16:49,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 41 transitions, 196 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-21 19:16:49,903 INFO L231 Difference]: Finished difference. Result has 37 places, 29 transitions, 119 flow [2024-06-21 19:16:49,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=119, PETRI_PLACES=37, PETRI_TRANSITIONS=29} [2024-06-21 19:16:49,904 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 7 predicate places. [2024-06-21 19:16:49,904 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 29 transitions, 119 flow [2024-06-21 19:16:49,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:16:49,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:16:49,904 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:16:49,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-21 19:16:49,904 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:16:49,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:16:49,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1645151967, now seen corresponding path program 1 times [2024-06-21 19:16:49,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:16:49,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596678640] [2024-06-21 19:16:49,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:16:49,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:16:49,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:16:50,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:16:50,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:16:50,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596678640] [2024-06-21 19:16:50,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596678640] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:16:50,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:16:50,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 19:16:50,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142678717] [2024-06-21 19:16:50,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:16:50,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 19:16:50,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:16:50,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 19:16:50,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-21 19:16:50,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-21 19:16:50,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 29 transitions, 119 flow. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:16:50,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:16:50,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-21 19:16:50,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:16:50,780 INFO L124 PetriNetUnfolderBase]: 123/252 cut-off events. [2024-06-21 19:16:50,781 INFO L125 PetriNetUnfolderBase]: For 265/265 co-relation queries the response was YES. [2024-06-21 19:16:50,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 697 conditions, 252 events. 123/252 cut-off events. For 265/265 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 963 event pairs, 38 based on Foata normal form. 1/252 useless extension candidates. Maximal degree in co-relation 681. Up to 219 conditions per place. [2024-06-21 19:16:50,782 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 24 selfloop transitions, 8 changer transitions 0/37 dead transitions. [2024-06-21 19:16:50,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 37 transitions, 209 flow [2024-06-21 19:16:50,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 19:16:50,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 19:16:50,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 83 transitions. [2024-06-21 19:16:50,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44623655913978494 [2024-06-21 19:16:50,787 INFO L175 Difference]: Start difference. First operand has 37 places, 29 transitions, 119 flow. Second operand 6 states and 83 transitions. [2024-06-21 19:16:50,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 37 transitions, 209 flow [2024-06-21 19:16:50,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 37 transitions, 192 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-21 19:16:50,789 INFO L231 Difference]: Finished difference. Result has 41 places, 33 transitions, 148 flow [2024-06-21 19:16:50,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=148, PETRI_PLACES=41, PETRI_TRANSITIONS=33} [2024-06-21 19:16:50,791 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 11 predicate places. [2024-06-21 19:16:50,791 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 33 transitions, 148 flow [2024-06-21 19:16:50,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:16:50,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:16:50,792 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:16:50,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-21 19:16:50,793 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:16:50,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:16:50,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1069977843, now seen corresponding path program 1 times [2024-06-21 19:16:50,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:16:50,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023410139] [2024-06-21 19:16:50,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:16:50,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:16:50,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:16:51,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:16:51,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:16:51,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023410139] [2024-06-21 19:16:51,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023410139] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:16:51,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:16:51,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 19:16:51,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401755596] [2024-06-21 19:16:51,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:16:51,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 19:16:51,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:16:51,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 19:16:51,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-21 19:16:52,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 31 [2024-06-21 19:16:52,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 33 transitions, 148 flow. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:16:52,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:16:52,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 31 [2024-06-21 19:16:52,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:16:52,228 INFO L124 PetriNetUnfolderBase]: 141/269 cut-off events. [2024-06-21 19:16:52,229 INFO L125 PetriNetUnfolderBase]: For 410/410 co-relation queries the response was YES. [2024-06-21 19:16:52,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 810 conditions, 269 events. 141/269 cut-off events. For 410/410 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 999 event pairs, 24 based on Foata normal form. 4/272 useless extension candidates. Maximal degree in co-relation 792. Up to 215 conditions per place. [2024-06-21 19:16:52,231 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 31 selfloop transitions, 9 changer transitions 0/45 dead transitions. [2024-06-21 19:16:52,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 45 transitions, 256 flow [2024-06-21 19:16:52,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 19:16:52,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 19:16:52,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 99 transitions. [2024-06-21 19:16:52,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.532258064516129 [2024-06-21 19:16:52,234 INFO L175 Difference]: Start difference. First operand has 41 places, 33 transitions, 148 flow. Second operand 6 states and 99 transitions. [2024-06-21 19:16:52,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 45 transitions, 256 flow [2024-06-21 19:16:52,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 45 transitions, 243 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-21 19:16:52,238 INFO L231 Difference]: Finished difference. Result has 43 places, 32 transitions, 149 flow [2024-06-21 19:16:52,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=149, PETRI_PLACES=43, PETRI_TRANSITIONS=32} [2024-06-21 19:16:52,240 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 13 predicate places. [2024-06-21 19:16:52,242 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 32 transitions, 149 flow [2024-06-21 19:16:52,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:16:52,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:16:52,243 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:16:52,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-21 19:16:52,247 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:16:52,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:16:52,248 INFO L85 PathProgramCache]: Analyzing trace with hash 539897294, now seen corresponding path program 1 times [2024-06-21 19:16:52,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:16:52,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124219300] [2024-06-21 19:16:52,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:16:52,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:16:52,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:16:53,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:16:53,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:16:53,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124219300] [2024-06-21 19:16:53,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124219300] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:16:53,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:16:53,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 19:16:53,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526659] [2024-06-21 19:16:53,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:16:53,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 19:16:53,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:16:53,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 19:16:53,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-06-21 19:16:53,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-21 19:16:53,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 32 transitions, 149 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:16:53,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:16:53,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-21 19:16:53,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:16:53,576 INFO L124 PetriNetUnfolderBase]: 139/266 cut-off events. [2024-06-21 19:16:53,576 INFO L125 PetriNetUnfolderBase]: For 560/560 co-relation queries the response was YES. [2024-06-21 19:16:53,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 845 conditions, 266 events. 139/266 cut-off events. For 560/560 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 998 event pairs, 41 based on Foata normal form. 1/266 useless extension candidates. Maximal degree in co-relation 826. Up to 242 conditions per place. [2024-06-21 19:16:53,579 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 25 selfloop transitions, 10 changer transitions 0/39 dead transitions. [2024-06-21 19:16:53,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 39 transitions, 239 flow [2024-06-21 19:16:53,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 19:16:53,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 19:16:53,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 80 transitions. [2024-06-21 19:16:53,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43010752688172044 [2024-06-21 19:16:53,580 INFO L175 Difference]: Start difference. First operand has 43 places, 32 transitions, 149 flow. Second operand 6 states and 80 transitions. [2024-06-21 19:16:53,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 39 transitions, 239 flow [2024-06-21 19:16:53,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 39 transitions, 217 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-21 19:16:53,582 INFO L231 Difference]: Finished difference. Result has 45 places, 34 transitions, 164 flow [2024-06-21 19:16:53,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=164, PETRI_PLACES=45, PETRI_TRANSITIONS=34} [2024-06-21 19:16:53,585 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 15 predicate places. [2024-06-21 19:16:53,585 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 34 transitions, 164 flow [2024-06-21 19:16:53,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:16:53,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:16:53,586 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:16:53,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-21 19:16:53,586 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:16:53,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:16:53,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1470527810, now seen corresponding path program 1 times [2024-06-21 19:16:53,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:16:53,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136236793] [2024-06-21 19:16:53,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:16:53,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:16:53,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:16:54,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:16:54,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:16:54,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136236793] [2024-06-21 19:16:54,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136236793] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:16:54,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:16:54,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 19:16:54,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336817672] [2024-06-21 19:16:54,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:16:54,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 19:16:54,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:16:54,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 19:16:54,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-21 19:16:54,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-21 19:16:54,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 34 transitions, 164 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:16:54,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:16:54,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-21 19:16:54,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:16:54,573 INFO L124 PetriNetUnfolderBase]: 146/284 cut-off events. [2024-06-21 19:16:54,573 INFO L125 PetriNetUnfolderBase]: For 717/717 co-relation queries the response was YES. [2024-06-21 19:16:54,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 931 conditions, 284 events. 146/284 cut-off events. For 717/717 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1110 event pairs, 61 based on Foata normal form. 1/283 useless extension candidates. Maximal degree in co-relation 910. Up to 246 conditions per place. [2024-06-21 19:16:54,575 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 29 selfloop transitions, 13 changer transitions 0/46 dead transitions. [2024-06-21 19:16:54,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 46 transitions, 292 flow [2024-06-21 19:16:54,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 19:16:54,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 19:16:54,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 83 transitions. [2024-06-21 19:16:54,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44623655913978494 [2024-06-21 19:16:54,577 INFO L175 Difference]: Start difference. First operand has 45 places, 34 transitions, 164 flow. Second operand 6 states and 83 transitions. [2024-06-21 19:16:54,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 46 transitions, 292 flow [2024-06-21 19:16:54,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 46 transitions, 271 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-21 19:16:54,580 INFO L231 Difference]: Finished difference. Result has 48 places, 40 transitions, 212 flow [2024-06-21 19:16:54,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=212, PETRI_PLACES=48, PETRI_TRANSITIONS=40} [2024-06-21 19:16:54,581 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 18 predicate places. [2024-06-21 19:16:54,581 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 40 transitions, 212 flow [2024-06-21 19:16:54,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:16:54,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:16:54,582 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:16:54,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-21 19:16:54,582 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:16:54,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:16:54,583 INFO L85 PathProgramCache]: Analyzing trace with hash -892838078, now seen corresponding path program 2 times [2024-06-21 19:16:54,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:16:54,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230912230] [2024-06-21 19:16:54,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:16:54,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:16:54,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:16:55,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:16:55,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:16:55,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230912230] [2024-06-21 19:16:55,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230912230] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:16:55,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:16:55,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 19:16:55,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028899374] [2024-06-21 19:16:55,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:16:55,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 19:16:55,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:16:55,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 19:16:55,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-21 19:16:55,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-21 19:16:55,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 40 transitions, 212 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:16:55,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:16:55,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-21 19:16:55,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:16:55,496 INFO L124 PetriNetUnfolderBase]: 154/292 cut-off events. [2024-06-21 19:16:55,497 INFO L125 PetriNetUnfolderBase]: For 951/951 co-relation queries the response was YES. [2024-06-21 19:16:55,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1052 conditions, 292 events. 154/292 cut-off events. For 951/951 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1143 event pairs, 41 based on Foata normal form. 1/288 useless extension candidates. Maximal degree in co-relation 1029. Up to 233 conditions per place. [2024-06-21 19:16:55,499 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 29 selfloop transitions, 20 changer transitions 0/53 dead transitions. [2024-06-21 19:16:55,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 53 transitions, 378 flow [2024-06-21 19:16:55,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 19:16:55,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 19:16:55,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 87 transitions. [2024-06-21 19:16:55,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46774193548387094 [2024-06-21 19:16:55,501 INFO L175 Difference]: Start difference. First operand has 48 places, 40 transitions, 212 flow. Second operand 6 states and 87 transitions. [2024-06-21 19:16:55,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 53 transitions, 378 flow [2024-06-21 19:16:55,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 53 transitions, 362 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-06-21 19:16:55,504 INFO L231 Difference]: Finished difference. Result has 55 places, 47 transitions, 305 flow [2024-06-21 19:16:55,504 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=305, PETRI_PLACES=55, PETRI_TRANSITIONS=47} [2024-06-21 19:16:55,506 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 25 predicate places. [2024-06-21 19:16:55,506 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 47 transitions, 305 flow [2024-06-21 19:16:55,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:16:55,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:16:55,506 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:16:55,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-21 19:16:55,507 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:16:55,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:16:55,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1904539712, now seen corresponding path program 3 times [2024-06-21 19:16:55,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:16:55,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990463724] [2024-06-21 19:16:55,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:16:55,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:16:55,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:16:56,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:16:56,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:16:56,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990463724] [2024-06-21 19:16:56,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990463724] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:16:56,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:16:56,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 19:16:56,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335281673] [2024-06-21 19:16:56,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:16:56,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 19:16:56,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:16:56,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 19:16:56,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-21 19:16:56,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-21 19:16:56,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 47 transitions, 305 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:16:56,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:16:56,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-21 19:16:56,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:16:56,395 INFO L124 PetriNetUnfolderBase]: 159/309 cut-off events. [2024-06-21 19:16:56,395 INFO L125 PetriNetUnfolderBase]: For 1400/1400 co-relation queries the response was YES. [2024-06-21 19:16:56,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1215 conditions, 309 events. 159/309 cut-off events. For 1400/1400 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1226 event pairs, 62 based on Foata normal form. 2/310 useless extension candidates. Maximal degree in co-relation 1187. Up to 251 conditions per place. [2024-06-21 19:16:56,399 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 39 selfloop transitions, 17 changer transitions 0/60 dead transitions. [2024-06-21 19:16:56,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 60 transitions, 472 flow [2024-06-21 19:16:56,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 19:16:56,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 19:16:56,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 97 transitions. [2024-06-21 19:16:56,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4470046082949309 [2024-06-21 19:16:56,400 INFO L175 Difference]: Start difference. First operand has 55 places, 47 transitions, 305 flow. Second operand 7 states and 97 transitions. [2024-06-21 19:16:56,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 60 transitions, 472 flow [2024-06-21 19:16:56,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 60 transitions, 462 flow, removed 5 selfloop flow, removed 0 redundant places. [2024-06-21 19:16:56,405 INFO L231 Difference]: Finished difference. Result has 62 places, 51 transitions, 371 flow [2024-06-21 19:16:56,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=371, PETRI_PLACES=62, PETRI_TRANSITIONS=51} [2024-06-21 19:16:56,406 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 32 predicate places. [2024-06-21 19:16:56,406 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 51 transitions, 371 flow [2024-06-21 19:16:56,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:16:56,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:16:56,407 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:16:56,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-21 19:16:56,407 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:16:56,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:16:56,407 INFO L85 PathProgramCache]: Analyzing trace with hash -443052320, now seen corresponding path program 1 times [2024-06-21 19:16:56,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:16:56,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829704322] [2024-06-21 19:16:56,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:16:56,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:16:56,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:16:57,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:16:57,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:16:57,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829704322] [2024-06-21 19:16:57,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829704322] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:16:57,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:16:57,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 19:16:57,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681228038] [2024-06-21 19:16:57,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:16:57,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 19:16:57,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:16:57,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 19:16:57,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-06-21 19:16:57,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-21 19:16:57,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 51 transitions, 371 flow. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:16:57,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:16:57,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-21 19:16:57,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:16:58,178 INFO L124 PetriNetUnfolderBase]: 157/306 cut-off events. [2024-06-21 19:16:58,178 INFO L125 PetriNetUnfolderBase]: For 1700/1700 co-relation queries the response was YES. [2024-06-21 19:16:58,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1266 conditions, 306 events. 157/306 cut-off events. For 1700/1700 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1224 event pairs, 63 based on Foata normal form. 1/306 useless extension candidates. Maximal degree in co-relation 1234. Up to 270 conditions per place. [2024-06-21 19:16:58,181 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 43 selfloop transitions, 12 changer transitions 0/59 dead transitions. [2024-06-21 19:16:58,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 59 transitions, 505 flow [2024-06-21 19:16:58,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 19:16:58,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 19:16:58,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 91 transitions. [2024-06-21 19:16:58,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-21 19:16:58,182 INFO L175 Difference]: Start difference. First operand has 62 places, 51 transitions, 371 flow. Second operand 7 states and 91 transitions. [2024-06-21 19:16:58,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 59 transitions, 505 flow [2024-06-21 19:16:58,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 59 transitions, 474 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-21 19:16:58,188 INFO L231 Difference]: Finished difference. Result has 65 places, 53 transitions, 383 flow [2024-06-21 19:16:58,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=383, PETRI_PLACES=65, PETRI_TRANSITIONS=53} [2024-06-21 19:16:58,189 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 35 predicate places. [2024-06-21 19:16:58,189 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 53 transitions, 383 flow [2024-06-21 19:16:58,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:16:58,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:16:58,189 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:16:58,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-21 19:16:58,190 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:16:58,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:16:58,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1913740113, now seen corresponding path program 1 times [2024-06-21 19:16:58,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:16:58,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360028517] [2024-06-21 19:16:58,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:16:58,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:16:58,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:16:59,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:16:59,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:16:59,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360028517] [2024-06-21 19:16:59,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360028517] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:16:59,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:16:59,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 19:16:59,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559096580] [2024-06-21 19:16:59,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:16:59,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 19:16:59,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:16:59,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 19:16:59,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-21 19:16:59,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-21 19:16:59,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 53 transitions, 383 flow. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:16:59,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:16:59,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-21 19:16:59,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:16:59,609 INFO L124 PetriNetUnfolderBase]: 164/317 cut-off events. [2024-06-21 19:16:59,610 INFO L125 PetriNetUnfolderBase]: For 1931/1931 co-relation queries the response was YES. [2024-06-21 19:16:59,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1338 conditions, 317 events. 164/317 cut-off events. For 1931/1931 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1281 event pairs, 49 based on Foata normal form. 2/316 useless extension candidates. Maximal degree in co-relation 1306. Up to 252 conditions per place. [2024-06-21 19:16:59,612 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 39 selfloop transitions, 21 changer transitions 0/64 dead transitions. [2024-06-21 19:16:59,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 64 transitions, 561 flow [2024-06-21 19:16:59,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 19:16:59,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 19:16:59,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 100 transitions. [2024-06-21 19:16:59,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4608294930875576 [2024-06-21 19:16:59,613 INFO L175 Difference]: Start difference. First operand has 65 places, 53 transitions, 383 flow. Second operand 7 states and 100 transitions. [2024-06-21 19:16:59,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 64 transitions, 561 flow [2024-06-21 19:16:59,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 64 transitions, 534 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-21 19:16:59,617 INFO L231 Difference]: Finished difference. Result has 67 places, 56 transitions, 429 flow [2024-06-21 19:16:59,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=429, PETRI_PLACES=67, PETRI_TRANSITIONS=56} [2024-06-21 19:16:59,618 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 37 predicate places. [2024-06-21 19:16:59,618 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 56 transitions, 429 flow [2024-06-21 19:16:59,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:16:59,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:16:59,618 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:16:59,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-21 19:16:59,619 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:16:59,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:16:59,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1707086673, now seen corresponding path program 2 times [2024-06-21 19:16:59,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:16:59,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652498335] [2024-06-21 19:16:59,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:16:59,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:16:59,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:17:00,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:17:00,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:17:00,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652498335] [2024-06-21 19:17:00,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652498335] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:17:00,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:17:00,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 19:17:00,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187004148] [2024-06-21 19:17:00,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:17:00,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 19:17:00,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:17:00,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 19:17:00,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-21 19:17:00,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-21 19:17:00,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 56 transitions, 429 flow. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:00,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:17:00,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-21 19:17:00,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:17:00,923 INFO L124 PetriNetUnfolderBase]: 167/320 cut-off events. [2024-06-21 19:17:00,923 INFO L125 PetriNetUnfolderBase]: For 2307/2307 co-relation queries the response was YES. [2024-06-21 19:17:00,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1461 conditions, 320 events. 167/320 cut-off events. For 2307/2307 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1303 event pairs, 60 based on Foata normal form. 1/317 useless extension candidates. Maximal degree in co-relation 1428. Up to 249 conditions per place. [2024-06-21 19:17:00,926 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 35 selfloop transitions, 26 changer transitions 0/65 dead transitions. [2024-06-21 19:17:00,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 65 transitions, 605 flow [2024-06-21 19:17:00,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 19:17:00,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 19:17:00,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 98 transitions. [2024-06-21 19:17:00,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45161290322580644 [2024-06-21 19:17:00,927 INFO L175 Difference]: Start difference. First operand has 67 places, 56 transitions, 429 flow. Second operand 7 states and 98 transitions. [2024-06-21 19:17:00,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 65 transitions, 605 flow [2024-06-21 19:17:00,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 65 transitions, 542 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-21 19:17:00,931 INFO L231 Difference]: Finished difference. Result has 69 places, 58 transitions, 443 flow [2024-06-21 19:17:00,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=443, PETRI_PLACES=69, PETRI_TRANSITIONS=58} [2024-06-21 19:17:00,931 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 39 predicate places. [2024-06-21 19:17:00,932 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 58 transitions, 443 flow [2024-06-21 19:17:00,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:00,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:17:00,932 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:17:00,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-21 19:17:00,932 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:17:00,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:17:00,933 INFO L85 PathProgramCache]: Analyzing trace with hash -849729171, now seen corresponding path program 3 times [2024-06-21 19:17:00,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:17:00,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255656087] [2024-06-21 19:17:00,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:17:00,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:17:00,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:17:02,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:17:02,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:17:02,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255656087] [2024-06-21 19:17:02,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255656087] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:17:02,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:17:02,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 19:17:02,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434399184] [2024-06-21 19:17:02,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:17:02,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 19:17:02,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:17:02,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 19:17:02,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-21 19:17:02,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-21 19:17:02,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 58 transitions, 443 flow. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:02,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:17:02,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-21 19:17:02,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:17:02,510 INFO L124 PetriNetUnfolderBase]: 175/335 cut-off events. [2024-06-21 19:17:02,511 INFO L125 PetriNetUnfolderBase]: For 2761/2761 co-relation queries the response was YES. [2024-06-21 19:17:02,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1583 conditions, 335 events. 175/335 cut-off events. For 2761/2761 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1361 event pairs, 44 based on Foata normal form. 1/331 useless extension candidates. Maximal degree in co-relation 1549. Up to 241 conditions per place. [2024-06-21 19:17:02,513 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 32 selfloop transitions, 35 changer transitions 0/71 dead transitions. [2024-06-21 19:17:02,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 71 transitions, 691 flow [2024-06-21 19:17:02,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 19:17:02,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 19:17:02,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 101 transitions. [2024-06-21 19:17:02,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46543778801843316 [2024-06-21 19:17:02,515 INFO L175 Difference]: Start difference. First operand has 69 places, 58 transitions, 443 flow. Second operand 7 states and 101 transitions. [2024-06-21 19:17:02,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 71 transitions, 691 flow [2024-06-21 19:17:02,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 71 transitions, 630 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-21 19:17:02,519 INFO L231 Difference]: Finished difference. Result has 72 places, 63 transitions, 526 flow [2024-06-21 19:17:02,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=526, PETRI_PLACES=72, PETRI_TRANSITIONS=63} [2024-06-21 19:17:02,519 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 42 predicate places. [2024-06-21 19:17:02,519 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 63 transitions, 526 flow [2024-06-21 19:17:02,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:02,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:17:02,520 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:17:02,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-21 19:17:02,520 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:17:02,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:17:02,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1103110033, now seen corresponding path program 4 times [2024-06-21 19:17:02,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:17:02,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270341786] [2024-06-21 19:17:02,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:17:02,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:17:02,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:17:03,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:17:03,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:17:03,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270341786] [2024-06-21 19:17:03,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270341786] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:17:03,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:17:03,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 19:17:03,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092557772] [2024-06-21 19:17:03,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:17:03,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 19:17:03,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:17:03,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 19:17:03,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-21 19:17:03,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-21 19:17:03,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 63 transitions, 526 flow. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:03,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:17:03,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-21 19:17:03,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:17:03,845 INFO L124 PetriNetUnfolderBase]: 171/330 cut-off events. [2024-06-21 19:17:03,845 INFO L125 PetriNetUnfolderBase]: For 3133/3133 co-relation queries the response was YES. [2024-06-21 19:17:03,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1645 conditions, 330 events. 171/330 cut-off events. For 3133/3133 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1339 event pairs, 54 based on Foata normal form. 2/331 useless extension candidates. Maximal degree in co-relation 1609. Up to 266 conditions per place. [2024-06-21 19:17:03,847 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 49 selfloop transitions, 20 changer transitions 0/73 dead transitions. [2024-06-21 19:17:03,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 73 transitions, 690 flow [2024-06-21 19:17:03,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:17:03,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:17:03,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 109 transitions. [2024-06-21 19:17:03,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43951612903225806 [2024-06-21 19:17:03,849 INFO L175 Difference]: Start difference. First operand has 72 places, 63 transitions, 526 flow. Second operand 8 states and 109 transitions. [2024-06-21 19:17:03,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 73 transitions, 690 flow [2024-06-21 19:17:03,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 73 transitions, 632 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-06-21 19:17:03,854 INFO L231 Difference]: Finished difference. Result has 77 places, 63 transitions, 514 flow [2024-06-21 19:17:03,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=468, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=514, PETRI_PLACES=77, PETRI_TRANSITIONS=63} [2024-06-21 19:17:03,855 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 47 predicate places. [2024-06-21 19:17:03,855 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 63 transitions, 514 flow [2024-06-21 19:17:03,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:03,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:17:03,855 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:17:03,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-21 19:17:03,855 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:17:03,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:17:03,855 INFO L85 PathProgramCache]: Analyzing trace with hash -849719251, now seen corresponding path program 1 times [2024-06-21 19:17:03,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:17:03,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828993608] [2024-06-21 19:17:03,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:17:03,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:17:03,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:17:05,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:17:05,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:17:05,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828993608] [2024-06-21 19:17:05,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828993608] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:17:05,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:17:05,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:17:05,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916079147] [2024-06-21 19:17:05,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:17:05,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:17:05,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:17:05,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:17:05,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:17:05,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-21 19:17:05,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 63 transitions, 514 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:05,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:17:05,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-21 19:17:05,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:17:06,062 INFO L124 PetriNetUnfolderBase]: 169/329 cut-off events. [2024-06-21 19:17:06,063 INFO L125 PetriNetUnfolderBase]: For 3307/3307 co-relation queries the response was YES. [2024-06-21 19:17:06,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1661 conditions, 329 events. 169/329 cut-off events. For 3307/3307 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1359 event pairs, 50 based on Foata normal form. 1/329 useless extension candidates. Maximal degree in co-relation 1623. Up to 288 conditions per place. [2024-06-21 19:17:06,065 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 54 selfloop transitions, 14 changer transitions 0/72 dead transitions. [2024-06-21 19:17:06,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 72 transitions, 678 flow [2024-06-21 19:17:06,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:17:06,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:17:06,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 102 transitions. [2024-06-21 19:17:06,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4112903225806452 [2024-06-21 19:17:06,067 INFO L175 Difference]: Start difference. First operand has 77 places, 63 transitions, 514 flow. Second operand 8 states and 102 transitions. [2024-06-21 19:17:06,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 72 transitions, 678 flow [2024-06-21 19:17:06,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 72 transitions, 615 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-21 19:17:06,071 INFO L231 Difference]: Finished difference. Result has 78 places, 65 transitions, 500 flow [2024-06-21 19:17:06,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=451, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=500, PETRI_PLACES=78, PETRI_TRANSITIONS=65} [2024-06-21 19:17:06,072 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 48 predicate places. [2024-06-21 19:17:06,072 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 65 transitions, 500 flow [2024-06-21 19:17:06,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:06,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:17:06,073 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:17:06,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-21 19:17:06,073 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:17:06,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:17:06,074 INFO L85 PathProgramCache]: Analyzing trace with hash 133001121, now seen corresponding path program 1 times [2024-06-21 19:17:06,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:17:06,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327146379] [2024-06-21 19:17:06,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:17:06,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:17:06,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:17:07,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:17:07,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:17:07,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327146379] [2024-06-21 19:17:07,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327146379] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:17:07,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:17:07,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 19:17:07,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517677962] [2024-06-21 19:17:07,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:17:07,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 19:17:07,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:17:07,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 19:17:07,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-21 19:17:07,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-21 19:17:07,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 65 transitions, 500 flow. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:07,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:17:07,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-21 19:17:07,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:17:07,523 INFO L124 PetriNetUnfolderBase]: 172/335 cut-off events. [2024-06-21 19:17:07,523 INFO L125 PetriNetUnfolderBase]: For 3522/3522 co-relation queries the response was YES. [2024-06-21 19:17:07,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1690 conditions, 335 events. 172/335 cut-off events. For 3522/3522 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1411 event pairs, 47 based on Foata normal form. 1/333 useless extension candidates. Maximal degree in co-relation 1651. Up to 270 conditions per place. [2024-06-21 19:17:07,526 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 51 selfloop transitions, 20 changer transitions 0/75 dead transitions. [2024-06-21 19:17:07,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 75 transitions, 710 flow [2024-06-21 19:17:07,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 19:17:07,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 19:17:07,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 99 transitions. [2024-06-21 19:17:07,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45622119815668205 [2024-06-21 19:17:07,528 INFO L175 Difference]: Start difference. First operand has 78 places, 65 transitions, 500 flow. Second operand 7 states and 99 transitions. [2024-06-21 19:17:07,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 75 transitions, 710 flow [2024-06-21 19:17:07,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 75 transitions, 677 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-21 19:17:07,533 INFO L231 Difference]: Finished difference. Result has 79 places, 67 transitions, 534 flow [2024-06-21 19:17:07,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=534, PETRI_PLACES=79, PETRI_TRANSITIONS=67} [2024-06-21 19:17:07,534 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 49 predicate places. [2024-06-21 19:17:07,535 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 67 transitions, 534 flow [2024-06-21 19:17:07,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:07,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:17:07,535 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:17:07,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-21 19:17:07,535 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:17:07,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:17:07,536 INFO L85 PathProgramCache]: Analyzing trace with hash 128239521, now seen corresponding path program 2 times [2024-06-21 19:17:07,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:17:07,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363540379] [2024-06-21 19:17:07,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:17:07,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:17:07,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:17:08,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:17:08,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:17:08,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363540379] [2024-06-21 19:17:08,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363540379] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:17:08,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:17:08,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 19:17:08,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791111362] [2024-06-21 19:17:08,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:17:08,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 19:17:08,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:17:08,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 19:17:08,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-21 19:17:08,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-21 19:17:08,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 67 transitions, 534 flow. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:08,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:17:08,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-21 19:17:08,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:17:08,779 INFO L124 PetriNetUnfolderBase]: 169/330 cut-off events. [2024-06-21 19:17:08,779 INFO L125 PetriNetUnfolderBase]: For 3906/3906 co-relation queries the response was YES. [2024-06-21 19:17:08,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1710 conditions, 330 events. 169/330 cut-off events. For 3906/3906 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1361 event pairs, 47 based on Foata normal form. 1/328 useless extension candidates. Maximal degree in co-relation 1670. Up to 272 conditions per place. [2024-06-21 19:17:08,782 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 54 selfloop transitions, 17 changer transitions 0/75 dead transitions. [2024-06-21 19:17:08,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 75 transitions, 698 flow [2024-06-21 19:17:08,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:17:08,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:17:08,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 105 transitions. [2024-06-21 19:17:08,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42338709677419356 [2024-06-21 19:17:08,784 INFO L175 Difference]: Start difference. First operand has 79 places, 67 transitions, 534 flow. Second operand 8 states and 105 transitions. [2024-06-21 19:17:08,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 75 transitions, 698 flow [2024-06-21 19:17:08,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 75 transitions, 637 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-21 19:17:08,793 INFO L231 Difference]: Finished difference. Result has 82 places, 67 transitions, 512 flow [2024-06-21 19:17:08,793 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=473, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=512, PETRI_PLACES=82, PETRI_TRANSITIONS=67} [2024-06-21 19:17:08,793 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 52 predicate places. [2024-06-21 19:17:08,794 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 67 transitions, 512 flow [2024-06-21 19:17:08,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:08,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:17:08,794 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:17:08,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-21 19:17:08,794 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:17:08,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:17:08,795 INFO L85 PathProgramCache]: Analyzing trace with hash 803599391, now seen corresponding path program 1 times [2024-06-21 19:17:08,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:17:08,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885288185] [2024-06-21 19:17:08,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:17:08,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:17:08,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:17:10,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:17:10,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:17:10,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885288185] [2024-06-21 19:17:10,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885288185] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:17:10,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:17:10,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 19:17:10,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856482316] [2024-06-21 19:17:10,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:17:10,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 19:17:10,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:17:10,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 19:17:10,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-21 19:17:10,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 31 [2024-06-21 19:17:10,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 67 transitions, 512 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:10,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:17:10,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 31 [2024-06-21 19:17:10,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:17:10,416 INFO L124 PetriNetUnfolderBase]: 186/361 cut-off events. [2024-06-21 19:17:10,416 INFO L125 PetriNetUnfolderBase]: For 4684/4684 co-relation queries the response was YES. [2024-06-21 19:17:10,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1891 conditions, 361 events. 186/361 cut-off events. For 4684/4684 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1492 event pairs, 33 based on Foata normal form. 2/362 useless extension candidates. Maximal degree in co-relation 1852. Up to 252 conditions per place. [2024-06-21 19:17:10,419 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 49 selfloop transitions, 31 changer transitions 0/85 dead transitions. [2024-06-21 19:17:10,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 85 transitions, 840 flow [2024-06-21 19:17:10,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 19:17:10,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 19:17:10,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 115 transitions. [2024-06-21 19:17:10,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5299539170506913 [2024-06-21 19:17:10,420 INFO L175 Difference]: Start difference. First operand has 82 places, 67 transitions, 512 flow. Second operand 7 states and 115 transitions. [2024-06-21 19:17:10,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 85 transitions, 840 flow [2024-06-21 19:17:10,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 85 transitions, 798 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-21 19:17:10,427 INFO L231 Difference]: Finished difference. Result has 84 places, 74 transitions, 650 flow [2024-06-21 19:17:10,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=470, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=650, PETRI_PLACES=84, PETRI_TRANSITIONS=74} [2024-06-21 19:17:10,427 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 54 predicate places. [2024-06-21 19:17:10,428 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 74 transitions, 650 flow [2024-06-21 19:17:10,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:10,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:17:10,428 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:17:10,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-21 19:17:10,428 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:17:10,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:17:10,429 INFO L85 PathProgramCache]: Analyzing trace with hash -580080929, now seen corresponding path program 3 times [2024-06-21 19:17:10,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:17:10,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286292179] [2024-06-21 19:17:10,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:17:10,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:17:10,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:17:11,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:17:11,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:17:11,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286292179] [2024-06-21 19:17:11,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286292179] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:17:11,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:17:11,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 19:17:11,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836592786] [2024-06-21 19:17:11,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:17:11,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 19:17:11,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:17:11,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 19:17:11,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-21 19:17:11,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-21 19:17:11,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 74 transitions, 650 flow. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:11,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:17:11,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-21 19:17:11,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:17:11,792 INFO L124 PetriNetUnfolderBase]: 184/357 cut-off events. [2024-06-21 19:17:11,792 INFO L125 PetriNetUnfolderBase]: For 5122/5122 co-relation queries the response was YES. [2024-06-21 19:17:11,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2039 conditions, 357 events. 184/357 cut-off events. For 5122/5122 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1497 event pairs, 41 based on Foata normal form. 1/353 useless extension candidates. Maximal degree in co-relation 1998. Up to 272 conditions per place. [2024-06-21 19:17:11,795 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 51 selfloop transitions, 28 changer transitions 0/83 dead transitions. [2024-06-21 19:17:11,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 83 transitions, 886 flow [2024-06-21 19:17:11,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:17:11,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:17:11,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 106 transitions. [2024-06-21 19:17:11,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4274193548387097 [2024-06-21 19:17:11,798 INFO L175 Difference]: Start difference. First operand has 84 places, 74 transitions, 650 flow. Second operand 8 states and 106 transitions. [2024-06-21 19:17:11,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 83 transitions, 886 flow [2024-06-21 19:17:11,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 83 transitions, 845 flow, removed 14 selfloop flow, removed 2 redundant places. [2024-06-21 19:17:11,808 INFO L231 Difference]: Finished difference. Result has 90 places, 76 transitions, 700 flow [2024-06-21 19:17:11,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=609, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=700, PETRI_PLACES=90, PETRI_TRANSITIONS=76} [2024-06-21 19:17:11,809 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 60 predicate places. [2024-06-21 19:17:11,809 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 76 transitions, 700 flow [2024-06-21 19:17:11,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:11,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:17:11,810 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:17:11,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-21 19:17:11,810 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:17:11,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:17:11,810 INFO L85 PathProgramCache]: Analyzing trace with hash -580073985, now seen corresponding path program 2 times [2024-06-21 19:17:11,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:17:11,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312671072] [2024-06-21 19:17:11,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:17:11,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:17:11,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:17:13,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:17:13,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:17:13,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312671072] [2024-06-21 19:17:13,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312671072] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:17:13,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:17:13,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:17:13,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330762299] [2024-06-21 19:17:13,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:17:13,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:17:13,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:17:13,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:17:13,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:17:13,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-21 19:17:13,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 76 transitions, 700 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:13,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:17:13,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-21 19:17:13,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:17:13,411 INFO L124 PetriNetUnfolderBase]: 187/362 cut-off events. [2024-06-21 19:17:13,411 INFO L125 PetriNetUnfolderBase]: For 5773/5773 co-relation queries the response was YES. [2024-06-21 19:17:13,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2132 conditions, 362 events. 187/362 cut-off events. For 5773/5773 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1532 event pairs, 41 based on Foata normal form. 1/358 useless extension candidates. Maximal degree in co-relation 2088. Up to 281 conditions per place. [2024-06-21 19:17:13,414 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 57 selfloop transitions, 24 changer transitions 0/85 dead transitions. [2024-06-21 19:17:13,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 85 transitions, 900 flow [2024-06-21 19:17:13,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 19:17:13,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 19:17:13,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 104 transitions. [2024-06-21 19:17:13,415 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4792626728110599 [2024-06-21 19:17:13,415 INFO L175 Difference]: Start difference. First operand has 90 places, 76 transitions, 700 flow. Second operand 7 states and 104 transitions. [2024-06-21 19:17:13,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 85 transitions, 900 flow [2024-06-21 19:17:13,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 85 transitions, 825 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-21 19:17:13,423 INFO L231 Difference]: Finished difference. Result has 91 places, 78 transitions, 704 flow [2024-06-21 19:17:13,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=625, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=704, PETRI_PLACES=91, PETRI_TRANSITIONS=78} [2024-06-21 19:17:13,424 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 61 predicate places. [2024-06-21 19:17:13,424 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 78 transitions, 704 flow [2024-06-21 19:17:13,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:13,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:17:13,424 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:17:13,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-21 19:17:13,425 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:17:13,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:17:13,425 INFO L85 PathProgramCache]: Analyzing trace with hash -571799775, now seen corresponding path program 3 times [2024-06-21 19:17:13,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:17:13,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651837578] [2024-06-21 19:17:13,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:17:13,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:17:13,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:17:14,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:17:14,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:17:14,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651837578] [2024-06-21 19:17:14,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651837578] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:17:14,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:17:14,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 19:17:14,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832321021] [2024-06-21 19:17:14,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:17:14,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 19:17:14,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:17:14,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 19:17:14,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-21 19:17:15,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 31 [2024-06-21 19:17:15,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 78 transitions, 704 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:15,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:17:15,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 31 [2024-06-21 19:17:15,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:17:15,217 INFO L124 PetriNetUnfolderBase]: 200/385 cut-off events. [2024-06-21 19:17:15,217 INFO L125 PetriNetUnfolderBase]: For 6724/6724 co-relation queries the response was YES. [2024-06-21 19:17:15,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2331 conditions, 385 events. 200/385 cut-off events. For 6724/6724 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1636 event pairs, 42 based on Foata normal form. 1/381 useless extension candidates. Maximal degree in co-relation 2288. Up to 235 conditions per place. [2024-06-21 19:17:15,220 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 46 selfloop transitions, 44 changer transitions 0/95 dead transitions. [2024-06-21 19:17:15,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 95 transitions, 1114 flow [2024-06-21 19:17:15,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 19:17:15,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 19:17:15,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 117 transitions. [2024-06-21 19:17:15,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5391705069124424 [2024-06-21 19:17:15,222 INFO L175 Difference]: Start difference. First operand has 91 places, 78 transitions, 704 flow. Second operand 7 states and 117 transitions. [2024-06-21 19:17:15,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 95 transitions, 1114 flow [2024-06-21 19:17:15,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 95 transitions, 1051 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-21 19:17:15,230 INFO L231 Difference]: Finished difference. Result has 94 places, 84 transitions, 840 flow [2024-06-21 19:17:15,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=641, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=840, PETRI_PLACES=94, PETRI_TRANSITIONS=84} [2024-06-21 19:17:15,230 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 64 predicate places. [2024-06-21 19:17:15,230 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 84 transitions, 840 flow [2024-06-21 19:17:15,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:15,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:17:15,231 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:17:15,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-21 19:17:15,231 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:17:15,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:17:15,232 INFO L85 PathProgramCache]: Analyzing trace with hash -571503105, now seen corresponding path program 4 times [2024-06-21 19:17:15,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:17:15,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013623308] [2024-06-21 19:17:15,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:17:15,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:17:15,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:17:17,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:17:17,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:17:17,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013623308] [2024-06-21 19:17:17,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013623308] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:17:17,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:17:17,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:17:17,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363490067] [2024-06-21 19:17:17,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:17:17,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:17:17,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:17:17,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:17:17,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:17:17,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-21 19:17:17,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 84 transitions, 840 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:17,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:17:17,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-21 19:17:17,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:17:17,490 INFO L124 PetriNetUnfolderBase]: 198/385 cut-off events. [2024-06-21 19:17:17,490 INFO L125 PetriNetUnfolderBase]: For 7458/7458 co-relation queries the response was YES. [2024-06-21 19:17:17,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2441 conditions, 385 events. 198/385 cut-off events. For 7458/7458 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1617 event pairs, 37 based on Foata normal form. 1/385 useless extension candidates. Maximal degree in co-relation 2395. Up to 336 conditions per place. [2024-06-21 19:17:17,494 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 73 selfloop transitions, 14 changer transitions 0/91 dead transitions. [2024-06-21 19:17:17,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 91 transitions, 1030 flow [2024-06-21 19:17:17,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:17:17,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:17:17,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 102 transitions. [2024-06-21 19:17:17,496 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4112903225806452 [2024-06-21 19:17:17,496 INFO L175 Difference]: Start difference. First operand has 94 places, 84 transitions, 840 flow. Second operand 8 states and 102 transitions. [2024-06-21 19:17:17,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 91 transitions, 1030 flow [2024-06-21 19:17:17,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 91 transitions, 957 flow, removed 23 selfloop flow, removed 2 redundant places. [2024-06-21 19:17:17,506 INFO L231 Difference]: Finished difference. Result has 100 places, 84 transitions, 800 flow [2024-06-21 19:17:17,506 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=767, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=800, PETRI_PLACES=100, PETRI_TRANSITIONS=84} [2024-06-21 19:17:17,506 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 70 predicate places. [2024-06-21 19:17:17,506 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 84 transitions, 800 flow [2024-06-21 19:17:17,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:17,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:17:17,507 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:17:17,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-21 19:17:17,507 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:17:17,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:17:17,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1529617671, now seen corresponding path program 4 times [2024-06-21 19:17:17,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:17:17,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563821708] [2024-06-21 19:17:17,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:17:17,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:17:17,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:17:18,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:17:18,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:17:18,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563821708] [2024-06-21 19:17:18,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563821708] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:17:18,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:17:18,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 19:17:18,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357120335] [2024-06-21 19:17:18,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:17:18,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 19:17:18,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:17:18,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 19:17:18,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-21 19:17:18,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-21 19:17:18,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 84 transitions, 800 flow. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:18,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:17:18,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-21 19:17:18,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:17:18,696 INFO L124 PetriNetUnfolderBase]: 196/382 cut-off events. [2024-06-21 19:17:18,696 INFO L125 PetriNetUnfolderBase]: For 7419/7419 co-relation queries the response was YES. [2024-06-21 19:17:18,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2383 conditions, 382 events. 196/382 cut-off events. For 7419/7419 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1626 event pairs, 38 based on Foata normal form. 1/382 useless extension candidates. Maximal degree in co-relation 2334. Up to 311 conditions per place. [2024-06-21 19:17:18,699 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 71 selfloop transitions, 19 changer transitions 0/94 dead transitions. [2024-06-21 19:17:18,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 94 transitions, 1006 flow [2024-06-21 19:17:18,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:17:18,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:17:18,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 108 transitions. [2024-06-21 19:17:18,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43548387096774194 [2024-06-21 19:17:18,700 INFO L175 Difference]: Start difference. First operand has 100 places, 84 transitions, 800 flow. Second operand 8 states and 108 transitions. [2024-06-21 19:17:18,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 94 transitions, 1006 flow [2024-06-21 19:17:18,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 94 transitions, 967 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-21 19:17:18,711 INFO L231 Difference]: Finished difference. Result has 101 places, 84 transitions, 804 flow [2024-06-21 19:17:18,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=761, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=804, PETRI_PLACES=101, PETRI_TRANSITIONS=84} [2024-06-21 19:17:18,712 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 71 predicate places. [2024-06-21 19:17:18,712 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 84 transitions, 804 flow [2024-06-21 19:17:18,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:18,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:17:18,712 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:17:18,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-21 19:17:18,713 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:17:18,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:17:18,713 INFO L85 PathProgramCache]: Analyzing trace with hash -571492193, now seen corresponding path program 1 times [2024-06-21 19:17:18,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:17:18,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237668542] [2024-06-21 19:17:18,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:17:18,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:17:18,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:17:20,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:17:20,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:17:20,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237668542] [2024-06-21 19:17:20,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237668542] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:17:20,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:17:20,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:17:20,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352513734] [2024-06-21 19:17:20,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:17:20,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:17:20,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:17:20,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:17:20,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:17:20,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-21 19:17:20,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 84 transitions, 804 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:20,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:17:20,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-21 19:17:20,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:17:21,180 INFO L124 PetriNetUnfolderBase]: 193/377 cut-off events. [2024-06-21 19:17:21,181 INFO L125 PetriNetUnfolderBase]: For 7838/7838 co-relation queries the response was YES. [2024-06-21 19:17:21,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2350 conditions, 377 events. 193/377 cut-off events. For 7838/7838 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1593 event pairs, 42 based on Foata normal form. 2/378 useless extension candidates. Maximal degree in co-relation 2300. Up to 322 conditions per place. [2024-06-21 19:17:21,183 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 74 selfloop transitions, 15 changer transitions 0/93 dead transitions. [2024-06-21 19:17:21,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 93 transitions, 1002 flow [2024-06-21 19:17:21,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:17:21,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:17:21,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-21 19:17:21,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4014336917562724 [2024-06-21 19:17:21,185 INFO L175 Difference]: Start difference. First operand has 101 places, 84 transitions, 804 flow. Second operand 9 states and 112 transitions. [2024-06-21 19:17:21,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 93 transitions, 1002 flow [2024-06-21 19:17:21,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 93 transitions, 944 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-21 19:17:21,195 INFO L231 Difference]: Finished difference. Result has 103 places, 84 transitions, 780 flow [2024-06-21 19:17:21,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=746, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=780, PETRI_PLACES=103, PETRI_TRANSITIONS=84} [2024-06-21 19:17:21,196 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 73 predicate places. [2024-06-21 19:17:21,196 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 84 transitions, 780 flow [2024-06-21 19:17:21,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:21,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:17:21,196 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:17:21,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-21 19:17:21,196 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:17:21,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:17:21,197 INFO L85 PathProgramCache]: Analyzing trace with hash -171724436, now seen corresponding path program 1 times [2024-06-21 19:17:21,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:17:21,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72564961] [2024-06-21 19:17:21,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:17:21,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:17:21,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:17:22,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:17:22,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:17:22,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72564961] [2024-06-21 19:17:22,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72564961] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:17:22,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:17:22,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:17:22,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590841913] [2024-06-21 19:17:22,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:17:22,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:17:22,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:17:22,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:17:22,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:17:22,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-21 19:17:22,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 84 transitions, 780 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:22,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:17:22,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-21 19:17:22,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:17:23,074 INFO L124 PetriNetUnfolderBase]: 201/391 cut-off events. [2024-06-21 19:17:23,074 INFO L125 PetriNetUnfolderBase]: For 8342/8342 co-relation queries the response was YES. [2024-06-21 19:17:23,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2470 conditions, 391 events. 201/391 cut-off events. For 8342/8342 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1682 event pairs, 20 based on Foata normal form. 1/389 useless extension candidates. Maximal degree in co-relation 2419. Up to 306 conditions per place. [2024-06-21 19:17:23,077 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 67 selfloop transitions, 26 changer transitions 0/97 dead transitions. [2024-06-21 19:17:23,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 97 transitions, 1094 flow [2024-06-21 19:17:23,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:17:23,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:17:23,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2024-06-21 19:17:23,078 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4265232974910394 [2024-06-21 19:17:23,078 INFO L175 Difference]: Start difference. First operand has 103 places, 84 transitions, 780 flow. Second operand 9 states and 119 transitions. [2024-06-21 19:17:23,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 97 transitions, 1094 flow [2024-06-21 19:17:23,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 97 transitions, 1056 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-21 19:17:23,090 INFO L231 Difference]: Finished difference. Result has 106 places, 88 transitions, 873 flow [2024-06-21 19:17:23,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=742, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=873, PETRI_PLACES=106, PETRI_TRANSITIONS=88} [2024-06-21 19:17:23,090 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 76 predicate places. [2024-06-21 19:17:23,091 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 88 transitions, 873 flow [2024-06-21 19:17:23,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:23,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:17:23,091 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:17:23,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-21 19:17:23,091 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:17:23,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:17:23,092 INFO L85 PathProgramCache]: Analyzing trace with hash -315822356, now seen corresponding path program 2 times [2024-06-21 19:17:23,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:17:23,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573713244] [2024-06-21 19:17:23,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:17:23,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:17:23,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:17:24,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:17:24,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:17:24,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573713244] [2024-06-21 19:17:24,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573713244] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:17:24,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:17:24,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:17:24,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41686251] [2024-06-21 19:17:24,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:17:24,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:17:24,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:17:24,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:17:24,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:17:24,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-21 19:17:24,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 88 transitions, 873 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:24,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:17:24,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-21 19:17:24,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:17:24,824 INFO L124 PetriNetUnfolderBase]: 199/388 cut-off events. [2024-06-21 19:17:24,824 INFO L125 PetriNetUnfolderBase]: For 8670/8670 co-relation queries the response was YES. [2024-06-21 19:17:24,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2504 conditions, 388 events. 199/388 cut-off events. For 8670/8670 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1646 event pairs, 30 based on Foata normal form. 1/386 useless extension candidates. Maximal degree in co-relation 2451. Up to 313 conditions per place. [2024-06-21 19:17:24,828 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 70 selfloop transitions, 22 changer transitions 0/96 dead transitions. [2024-06-21 19:17:24,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 96 transitions, 1077 flow [2024-06-21 19:17:24,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:17:24,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:17:24,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-21 19:17:24,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-21 19:17:24,829 INFO L175 Difference]: Start difference. First operand has 106 places, 88 transitions, 873 flow. Second operand 9 states and 117 transitions. [2024-06-21 19:17:24,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 96 transitions, 1077 flow [2024-06-21 19:17:24,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 96 transitions, 1004 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-21 19:17:24,842 INFO L231 Difference]: Finished difference. Result has 109 places, 88 transitions, 849 flow [2024-06-21 19:17:24,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=800, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=849, PETRI_PLACES=109, PETRI_TRANSITIONS=88} [2024-06-21 19:17:24,842 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 79 predicate places. [2024-06-21 19:17:24,842 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 88 transitions, 849 flow [2024-06-21 19:17:24,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:24,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:17:24,842 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:17:24,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-21 19:17:24,843 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:17:24,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:17:24,843 INFO L85 PathProgramCache]: Analyzing trace with hash -858221874, now seen corresponding path program 1 times [2024-06-21 19:17:24,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:17:24,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386134671] [2024-06-21 19:17:24,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:17:24,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:17:24,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:17:26,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:17:26,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:17:26,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386134671] [2024-06-21 19:17:26,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386134671] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:17:26,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:17:26,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:17:26,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69221177] [2024-06-21 19:17:26,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:17:26,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:17:26,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:17:26,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:17:26,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:17:26,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-21 19:17:26,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 88 transitions, 849 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:26,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:17:26,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-21 19:17:26,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:17:27,225 INFO L124 PetriNetUnfolderBase]: 208/404 cut-off events. [2024-06-21 19:17:27,226 INFO L125 PetriNetUnfolderBase]: For 9788/9788 co-relation queries the response was YES. [2024-06-21 19:17:27,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2583 conditions, 404 events. 208/404 cut-off events. For 9788/9788 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1717 event pairs, 24 based on Foata normal form. 2/405 useless extension candidates. Maximal degree in co-relation 2529. Up to 300 conditions per place. [2024-06-21 19:17:27,229 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 68 selfloop transitions, 31 changer transitions 0/103 dead transitions. [2024-06-21 19:17:27,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 103 transitions, 1129 flow [2024-06-21 19:17:27,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:17:27,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:17:27,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 129 transitions. [2024-06-21 19:17:27,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46236559139784944 [2024-06-21 19:17:27,231 INFO L175 Difference]: Start difference. First operand has 109 places, 88 transitions, 849 flow. Second operand 9 states and 129 transitions. [2024-06-21 19:17:27,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 103 transitions, 1129 flow [2024-06-21 19:17:27,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 103 transitions, 1072 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-21 19:17:27,249 INFO L231 Difference]: Finished difference. Result has 111 places, 93 transitions, 933 flow [2024-06-21 19:17:27,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=792, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=933, PETRI_PLACES=111, PETRI_TRANSITIONS=93} [2024-06-21 19:17:27,250 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 81 predicate places. [2024-06-21 19:17:27,250 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 93 transitions, 933 flow [2024-06-21 19:17:27,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:27,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:17:27,250 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:17:27,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-21 19:17:27,250 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:17:27,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:17:27,251 INFO L85 PathProgramCache]: Analyzing trace with hash -795281666, now seen corresponding path program 3 times [2024-06-21 19:17:27,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:17:27,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308713528] [2024-06-21 19:17:27,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:17:27,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:17:27,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:17:28,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:17:28,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:17:28,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308713528] [2024-06-21 19:17:28,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308713528] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:17:28,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:17:28,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:17:28,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107108464] [2024-06-21 19:17:28,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:17:28,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:17:28,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:17:28,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:17:28,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:17:28,975 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-21 19:17:28,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 93 transitions, 933 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:28,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:17:28,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-21 19:17:28,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:17:29,322 INFO L124 PetriNetUnfolderBase]: 211/410 cut-off events. [2024-06-21 19:17:29,322 INFO L125 PetriNetUnfolderBase]: For 10095/10095 co-relation queries the response was YES. [2024-06-21 19:17:29,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2726 conditions, 410 events. 211/410 cut-off events. For 10095/10095 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1797 event pairs, 33 based on Foata normal form. 1/407 useless extension candidates. Maximal degree in co-relation 2670. Up to 274 conditions per place. [2024-06-21 19:17:29,325 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 56 selfloop transitions, 46 changer transitions 0/106 dead transitions. [2024-06-21 19:17:29,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 106 transitions, 1294 flow [2024-06-21 19:17:29,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:17:29,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:17:29,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2024-06-21 19:17:29,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4265232974910394 [2024-06-21 19:17:29,326 INFO L175 Difference]: Start difference. First operand has 111 places, 93 transitions, 933 flow. Second operand 9 states and 119 transitions. [2024-06-21 19:17:29,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 106 transitions, 1294 flow [2024-06-21 19:17:29,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 106 transitions, 1205 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-21 19:17:29,343 INFO L231 Difference]: Finished difference. Result has 115 places, 98 transitions, 1056 flow [2024-06-21 19:17:29,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=844, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1056, PETRI_PLACES=115, PETRI_TRANSITIONS=98} [2024-06-21 19:17:29,343 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 85 predicate places. [2024-06-21 19:17:29,343 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 98 transitions, 1056 flow [2024-06-21 19:17:29,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:29,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:17:29,344 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:17:29,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-21 19:17:29,344 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:17:29,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:17:29,344 INFO L85 PathProgramCache]: Analyzing trace with hash -802431506, now seen corresponding path program 4 times [2024-06-21 19:17:29,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:17:29,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651103147] [2024-06-21 19:17:29,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:17:29,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:17:29,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:17:30,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:17:30,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:17:30,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651103147] [2024-06-21 19:17:30,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651103147] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:17:30,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:17:30,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:17:30,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430486648] [2024-06-21 19:17:30,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:17:30,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:17:30,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:17:30,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:17:30,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:17:31,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-21 19:17:31,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 98 transitions, 1056 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:31,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:17:31,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-21 19:17:31,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:17:31,441 INFO L124 PetriNetUnfolderBase]: 214/417 cut-off events. [2024-06-21 19:17:31,441 INFO L125 PetriNetUnfolderBase]: For 11028/11028 co-relation queries the response was YES. [2024-06-21 19:17:31,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2874 conditions, 417 events. 214/417 cut-off events. For 11028/11028 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1838 event pairs, 38 based on Foata normal form. 1/413 useless extension candidates. Maximal degree in co-relation 2816. Up to 313 conditions per place. [2024-06-21 19:17:31,445 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 72 selfloop transitions, 33 changer transitions 0/109 dead transitions. [2024-06-21 19:17:31,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 109 transitions, 1397 flow [2024-06-21 19:17:31,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:17:31,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:17:31,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2024-06-21 19:17:31,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4265232974910394 [2024-06-21 19:17:31,446 INFO L175 Difference]: Start difference. First operand has 115 places, 98 transitions, 1056 flow. Second operand 9 states and 119 transitions. [2024-06-21 19:17:31,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 109 transitions, 1397 flow [2024-06-21 19:17:31,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 109 transitions, 1305 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-21 19:17:31,464 INFO L231 Difference]: Finished difference. Result has 118 places, 101 transitions, 1096 flow [2024-06-21 19:17:31,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=966, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1096, PETRI_PLACES=118, PETRI_TRANSITIONS=101} [2024-06-21 19:17:31,465 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 88 predicate places. [2024-06-21 19:17:31,465 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 101 transitions, 1096 flow [2024-06-21 19:17:31,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:31,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:17:31,465 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:17:31,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-21 19:17:31,465 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:17:31,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:17:31,466 INFO L85 PathProgramCache]: Analyzing trace with hash -802638896, now seen corresponding path program 5 times [2024-06-21 19:17:31,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:17:31,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289984965] [2024-06-21 19:17:31,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:17:31,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:17:31,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:17:32,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:17:32,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:17:32,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289984965] [2024-06-21 19:17:32,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289984965] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:17:32,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:17:32,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:17:32,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792037710] [2024-06-21 19:17:32,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:17:32,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:17:32,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:17:32,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:17:32,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:17:32,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-21 19:17:32,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 101 transitions, 1096 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:32,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:17:32,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-21 19:17:32,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:17:33,137 INFO L124 PetriNetUnfolderBase]: 212/414 cut-off events. [2024-06-21 19:17:33,138 INFO L125 PetriNetUnfolderBase]: For 10903/10903 co-relation queries the response was YES. [2024-06-21 19:17:33,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2827 conditions, 414 events. 212/414 cut-off events. For 10903/10903 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1820 event pairs, 38 based on Foata normal form. 1/410 useless extension candidates. Maximal degree in co-relation 2768. Up to 317 conditions per place. [2024-06-21 19:17:33,141 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 74 selfloop transitions, 30 changer transitions 0/108 dead transitions. [2024-06-21 19:17:33,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 108 transitions, 1320 flow [2024-06-21 19:17:33,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:17:33,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:17:33,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-21 19:17:33,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4157706093189964 [2024-06-21 19:17:33,142 INFO L175 Difference]: Start difference. First operand has 118 places, 101 transitions, 1096 flow. Second operand 9 states and 116 transitions. [2024-06-21 19:17:33,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 108 transitions, 1320 flow [2024-06-21 19:17:33,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 108 transitions, 1237 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-21 19:17:33,160 INFO L231 Difference]: Finished difference. Result has 122 places, 101 transitions, 1078 flow [2024-06-21 19:17:33,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1013, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1078, PETRI_PLACES=122, PETRI_TRANSITIONS=101} [2024-06-21 19:17:33,160 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 92 predicate places. [2024-06-21 19:17:33,160 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 101 transitions, 1078 flow [2024-06-21 19:17:33,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:33,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:17:33,161 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:17:33,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-21 19:17:33,161 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:17:33,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:17:33,161 INFO L85 PathProgramCache]: Analyzing trace with hash -545923060, now seen corresponding path program 2 times [2024-06-21 19:17:33,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:17:33,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553232405] [2024-06-21 19:17:33,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:17:33,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:17:33,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:17:35,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:17:35,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:17:35,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553232405] [2024-06-21 19:17:35,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553232405] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:17:35,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:17:35,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:17:35,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812736698] [2024-06-21 19:17:35,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:17:35,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:17:35,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:17:35,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:17:35,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:17:35,338 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-21 19:17:35,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 101 transitions, 1078 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:35,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:17:35,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-21 19:17:35,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:17:35,556 INFO L124 PetriNetUnfolderBase]: 215/417 cut-off events. [2024-06-21 19:17:35,556 INFO L125 PetriNetUnfolderBase]: For 11478/11478 co-relation queries the response was YES. [2024-06-21 19:17:35,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2883 conditions, 417 events. 215/417 cut-off events. For 11478/11478 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1836 event pairs, 38 based on Foata normal form. 1/413 useless extension candidates. Maximal degree in co-relation 2822. Up to 288 conditions per place. [2024-06-21 19:17:35,566 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 67 selfloop transitions, 40 changer transitions 0/111 dead transitions. [2024-06-21 19:17:35,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 111 transitions, 1338 flow [2024-06-21 19:17:35,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:17:35,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:17:35,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 120 transitions. [2024-06-21 19:17:35,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4838709677419355 [2024-06-21 19:17:35,567 INFO L175 Difference]: Start difference. First operand has 122 places, 101 transitions, 1078 flow. Second operand 8 states and 120 transitions. [2024-06-21 19:17:35,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 111 transitions, 1338 flow [2024-06-21 19:17:35,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 111 transitions, 1269 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-21 19:17:35,587 INFO L231 Difference]: Finished difference. Result has 122 places, 103 transitions, 1126 flow [2024-06-21 19:17:35,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1009, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1126, PETRI_PLACES=122, PETRI_TRANSITIONS=103} [2024-06-21 19:17:35,588 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 92 predicate places. [2024-06-21 19:17:35,588 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 103 transitions, 1126 flow [2024-06-21 19:17:35,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:35,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:17:35,588 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:17:35,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-21 19:17:35,589 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:17:35,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:17:35,589 INFO L85 PathProgramCache]: Analyzing trace with hash -802423570, now seen corresponding path program 3 times [2024-06-21 19:17:35,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:17:35,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977038444] [2024-06-21 19:17:35,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:17:35,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:17:35,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:17:37,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:17:37,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:17:37,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977038444] [2024-06-21 19:17:37,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977038444] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:17:37,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:17:37,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:17:37,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745496298] [2024-06-21 19:17:37,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:17:37,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:17:37,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:17:37,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:17:37,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:17:37,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-21 19:17:37,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 103 transitions, 1126 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:37,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:17:37,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-21 19:17:37,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:17:38,008 INFO L124 PetriNetUnfolderBase]: 218/422 cut-off events. [2024-06-21 19:17:38,009 INFO L125 PetriNetUnfolderBase]: For 12328/12328 co-relation queries the response was YES. [2024-06-21 19:17:38,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2987 conditions, 422 events. 218/422 cut-off events. For 12328/12328 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1851 event pairs, 38 based on Foata normal form. 1/418 useless extension candidates. Maximal degree in co-relation 2926. Up to 330 conditions per place. [2024-06-21 19:17:38,012 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 82 selfloop transitions, 27 changer transitions 0/113 dead transitions. [2024-06-21 19:17:38,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 113 transitions, 1394 flow [2024-06-21 19:17:38,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:17:38,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:17:38,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 125 transitions. [2024-06-21 19:17:38,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44802867383512546 [2024-06-21 19:17:38,013 INFO L175 Difference]: Start difference. First operand has 122 places, 103 transitions, 1126 flow. Second operand 9 states and 125 transitions. [2024-06-21 19:17:38,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 113 transitions, 1394 flow [2024-06-21 19:17:38,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 113 transitions, 1293 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-21 19:17:38,032 INFO L231 Difference]: Finished difference. Result has 125 places, 105 transitions, 1120 flow [2024-06-21 19:17:38,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1025, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1120, PETRI_PLACES=125, PETRI_TRANSITIONS=105} [2024-06-21 19:17:38,032 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 95 predicate places. [2024-06-21 19:17:38,033 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 105 transitions, 1120 flow [2024-06-21 19:17:38,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:38,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:17:38,033 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:17:38,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-21 19:17:38,033 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:17:38,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:17:38,033 INFO L85 PathProgramCache]: Analyzing trace with hash -536726290, now seen corresponding path program 4 times [2024-06-21 19:17:38,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:17:38,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322690867] [2024-06-21 19:17:38,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:17:38,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:17:38,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:17:40,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:17:40,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:17:40,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322690867] [2024-06-21 19:17:40,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322690867] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:17:40,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:17:40,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:17:40,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721951464] [2024-06-21 19:17:40,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:17:40,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:17:40,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:17:40,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:17:40,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:17:40,692 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-21 19:17:40,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 105 transitions, 1120 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:40,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:17:40,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-21 19:17:40,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:17:40,994 INFO L124 PetriNetUnfolderBase]: 221/434 cut-off events. [2024-06-21 19:17:40,995 INFO L125 PetriNetUnfolderBase]: For 13337/13337 co-relation queries the response was YES. [2024-06-21 19:17:40,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3033 conditions, 434 events. 221/434 cut-off events. For 13337/13337 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1940 event pairs, 34 based on Foata normal form. 1/434 useless extension candidates. Maximal degree in co-relation 2970. Up to 372 conditions per place. [2024-06-21 19:17:40,998 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 95 selfloop transitions, 16 changer transitions 0/115 dead transitions. [2024-06-21 19:17:40,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 115 transitions, 1396 flow [2024-06-21 19:17:40,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:17:40,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:17:40,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-21 19:17:40,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4050179211469534 [2024-06-21 19:17:40,999 INFO L175 Difference]: Start difference. First operand has 125 places, 105 transitions, 1120 flow. Second operand 9 states and 113 transitions. [2024-06-21 19:17:40,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 115 transitions, 1396 flow [2024-06-21 19:17:41,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 115 transitions, 1317 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-21 19:17:41,025 INFO L231 Difference]: Finished difference. Result has 127 places, 107 transitions, 1118 flow [2024-06-21 19:17:41,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1041, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1118, PETRI_PLACES=127, PETRI_TRANSITIONS=107} [2024-06-21 19:17:41,026 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 97 predicate places. [2024-06-21 19:17:41,026 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 107 transitions, 1118 flow [2024-06-21 19:17:41,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:41,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:17:41,027 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:17:41,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-21 19:17:41,027 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:17:41,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:17:41,027 INFO L85 PathProgramCache]: Analyzing trace with hash -536399860, now seen corresponding path program 5 times [2024-06-21 19:17:41,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:17:41,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809664620] [2024-06-21 19:17:41,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:17:41,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:17:41,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:17:42,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:17:42,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:17:42,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809664620] [2024-06-21 19:17:42,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809664620] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:17:42,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:17:42,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:17:42,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721420961] [2024-06-21 19:17:42,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:17:42,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:17:42,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:17:42,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:17:42,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:17:43,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-21 19:17:43,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 107 transitions, 1118 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:43,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:17:43,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-21 19:17:43,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:17:43,411 INFO L124 PetriNetUnfolderBase]: 219/429 cut-off events. [2024-06-21 19:17:43,411 INFO L125 PetriNetUnfolderBase]: For 13552/13552 co-relation queries the response was YES. [2024-06-21 19:17:43,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2970 conditions, 429 events. 219/429 cut-off events. For 13552/13552 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1905 event pairs, 30 based on Foata normal form. 1/429 useless extension candidates. Maximal degree in co-relation 2906. Up to 363 conditions per place. [2024-06-21 19:17:43,414 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 94 selfloop transitions, 20 changer transitions 0/118 dead transitions. [2024-06-21 19:17:43,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 118 transitions, 1406 flow [2024-06-21 19:17:43,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:17:43,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:17:43,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-21 19:17:43,415 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-21 19:17:43,415 INFO L175 Difference]: Start difference. First operand has 127 places, 107 transitions, 1118 flow. Second operand 10 states and 125 transitions. [2024-06-21 19:17:43,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 118 transitions, 1406 flow [2024-06-21 19:17:43,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 118 transitions, 1345 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-21 19:17:43,439 INFO L231 Difference]: Finished difference. Result has 130 places, 109 transitions, 1146 flow [2024-06-21 19:17:43,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1057, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1146, PETRI_PLACES=130, PETRI_TRANSITIONS=109} [2024-06-21 19:17:43,439 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 100 predicate places. [2024-06-21 19:17:43,440 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 109 transitions, 1146 flow [2024-06-21 19:17:43,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:43,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:17:43,440 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:17:43,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-21 19:17:43,440 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:17:43,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:17:43,441 INFO L85 PathProgramCache]: Analyzing trace with hash -560757146, now seen corresponding path program 6 times [2024-06-21 19:17:43,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:17:43,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868485112] [2024-06-21 19:17:43,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:17:43,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:17:43,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:17:44,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:17:44,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:17:44,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868485112] [2024-06-21 19:17:44,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868485112] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:17:44,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:17:44,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:17:44,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286787250] [2024-06-21 19:17:44,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:17:44,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:17:44,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:17:44,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:17:44,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:17:44,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-21 19:17:44,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 109 transitions, 1146 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:44,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:17:44,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-21 19:17:44,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:17:45,110 INFO L124 PetriNetUnfolderBase]: 216/424 cut-off events. [2024-06-21 19:17:45,110 INFO L125 PetriNetUnfolderBase]: For 13549/13549 co-relation queries the response was YES. [2024-06-21 19:17:45,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2915 conditions, 424 events. 216/424 cut-off events. For 13549/13549 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1861 event pairs, 23 based on Foata normal form. 1/424 useless extension candidates. Maximal degree in co-relation 2850. Up to 342 conditions per place. [2024-06-21 19:17:45,113 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 95 selfloop transitions, 21 changer transitions 0/120 dead transitions. [2024-06-21 19:17:45,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 120 transitions, 1406 flow [2024-06-21 19:17:45,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:17:45,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:17:45,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2024-06-21 19:17:45,114 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4265232974910394 [2024-06-21 19:17:45,114 INFO L175 Difference]: Start difference. First operand has 130 places, 109 transitions, 1146 flow. Second operand 9 states and 119 transitions. [2024-06-21 19:17:45,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 120 transitions, 1406 flow [2024-06-21 19:17:45,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 120 transitions, 1325 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-21 19:17:45,142 INFO L231 Difference]: Finished difference. Result has 131 places, 109 transitions, 1112 flow [2024-06-21 19:17:45,142 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1065, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1112, PETRI_PLACES=131, PETRI_TRANSITIONS=109} [2024-06-21 19:17:45,143 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 101 predicate places. [2024-06-21 19:17:45,143 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 109 transitions, 1112 flow [2024-06-21 19:17:45,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:45,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:17:45,143 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:17:45,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-21 19:17:45,144 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:17:45,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:17:45,144 INFO L85 PathProgramCache]: Analyzing trace with hash -355833524, now seen corresponding path program 7 times [2024-06-21 19:17:45,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:17:45,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552705301] [2024-06-21 19:17:45,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:17:45,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:17:45,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:17:46,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:17:46,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:17:46,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552705301] [2024-06-21 19:17:46,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552705301] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:17:46,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:17:46,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:17:46,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691789840] [2024-06-21 19:17:46,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:17:46,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:17:46,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:17:46,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:17:46,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:17:46,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-21 19:17:46,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 109 transitions, 1112 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:46,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:17:46,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-21 19:17:46,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:17:47,126 INFO L124 PetriNetUnfolderBase]: 214/421 cut-off events. [2024-06-21 19:17:47,126 INFO L125 PetriNetUnfolderBase]: For 13452/13452 co-relation queries the response was YES. [2024-06-21 19:17:47,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2842 conditions, 421 events. 214/421 cut-off events. For 13452/13452 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1857 event pairs, 23 based on Foata normal form. 1/421 useless extension candidates. Maximal degree in co-relation 2776. Up to 330 conditions per place. [2024-06-21 19:17:47,129 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 91 selfloop transitions, 25 changer transitions 0/120 dead transitions. [2024-06-21 19:17:47,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 120 transitions, 1372 flow [2024-06-21 19:17:47,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:17:47,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:17:47,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-21 19:17:47,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43010752688172044 [2024-06-21 19:17:47,130 INFO L175 Difference]: Start difference. First operand has 131 places, 109 transitions, 1112 flow. Second operand 9 states and 120 transitions. [2024-06-21 19:17:47,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 120 transitions, 1372 flow [2024-06-21 19:17:47,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 120 transitions, 1275 flow, removed 10 selfloop flow, removed 10 redundant places. [2024-06-21 19:17:47,156 INFO L231 Difference]: Finished difference. Result has 130 places, 109 transitions, 1070 flow [2024-06-21 19:17:47,156 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1015, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1070, PETRI_PLACES=130, PETRI_TRANSITIONS=109} [2024-06-21 19:17:47,157 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 100 predicate places. [2024-06-21 19:17:47,157 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 109 transitions, 1070 flow [2024-06-21 19:17:47,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:47,157 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:17:47,157 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:17:47,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-21 19:17:47,157 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:17:47,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:17:47,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1034923520, now seen corresponding path program 1 times [2024-06-21 19:17:47,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:17:47,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343793611] [2024-06-21 19:17:47,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:17:47,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:17:47,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:17:48,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:17:48,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:17:48,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343793611] [2024-06-21 19:17:48,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343793611] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:17:48,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:17:48,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:17:48,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437293036] [2024-06-21 19:17:48,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:17:48,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:17:48,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:17:48,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:17:48,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:17:48,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-21 19:17:48,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 109 transitions, 1070 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:48,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:17:48,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-21 19:17:48,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:17:48,500 INFO L124 PetriNetUnfolderBase]: 218/426 cut-off events. [2024-06-21 19:17:48,501 INFO L125 PetriNetUnfolderBase]: For 14500/14500 co-relation queries the response was YES. [2024-06-21 19:17:48,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2845 conditions, 426 events. 218/426 cut-off events. For 14500/14500 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 1885 event pairs, 36 based on Foata normal form. 2/425 useless extension candidates. Maximal degree in co-relation 2780. Up to 344 conditions per place. [2024-06-21 19:17:48,504 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 94 selfloop transitions, 21 changer transitions 0/119 dead transitions. [2024-06-21 19:17:48,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 119 transitions, 1336 flow [2024-06-21 19:17:48,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:17:48,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:17:48,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 109 transitions. [2024-06-21 19:17:48,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43951612903225806 [2024-06-21 19:17:48,506 INFO L175 Difference]: Start difference. First operand has 130 places, 109 transitions, 1070 flow. Second operand 8 states and 109 transitions. [2024-06-21 19:17:48,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 119 transitions, 1336 flow [2024-06-21 19:17:48,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 119 transitions, 1203 flow, removed 12 selfloop flow, removed 10 redundant places. [2024-06-21 19:17:48,536 INFO L231 Difference]: Finished difference. Result has 128 places, 110 transitions, 999 flow [2024-06-21 19:17:48,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=937, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=999, PETRI_PLACES=128, PETRI_TRANSITIONS=110} [2024-06-21 19:17:48,537 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 98 predicate places. [2024-06-21 19:17:48,537 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 110 transitions, 999 flow [2024-06-21 19:17:48,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:48,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:17:48,537 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:17:48,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-21 19:17:48,538 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:17:48,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:17:48,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1139993804, now seen corresponding path program 2 times [2024-06-21 19:17:48,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:17:48,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995219849] [2024-06-21 19:17:48,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:17:48,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:17:48,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:17:49,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:17:49,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:17:49,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995219849] [2024-06-21 19:17:49,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995219849] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:17:49,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:17:49,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:17:49,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82497350] [2024-06-21 19:17:49,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:17:49,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:17:49,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:17:49,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:17:49,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:17:49,622 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-21 19:17:49,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 110 transitions, 999 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:49,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:17:49,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-21 19:17:49,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:17:49,929 INFO L124 PetriNetUnfolderBase]: 222/438 cut-off events. [2024-06-21 19:17:49,929 INFO L125 PetriNetUnfolderBase]: For 15286/15286 co-relation queries the response was YES. [2024-06-21 19:17:49,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2804 conditions, 438 events. 222/438 cut-off events. For 15286/15286 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 1986 event pairs, 31 based on Foata normal form. 2/437 useless extension candidates. Maximal degree in co-relation 2740. Up to 358 conditions per place. [2024-06-21 19:17:49,932 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 99 selfloop transitions, 18 changer transitions 0/121 dead transitions. [2024-06-21 19:17:49,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 121 transitions, 1275 flow [2024-06-21 19:17:49,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:17:49,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:17:49,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-21 19:17:49,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4157706093189964 [2024-06-21 19:17:49,933 INFO L175 Difference]: Start difference. First operand has 128 places, 110 transitions, 999 flow. Second operand 9 states and 116 transitions. [2024-06-21 19:17:49,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 121 transitions, 1275 flow [2024-06-21 19:17:49,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 121 transitions, 1223 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-21 19:17:49,962 INFO L231 Difference]: Finished difference. Result has 131 places, 111 transitions, 1005 flow [2024-06-21 19:17:49,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=947, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1005, PETRI_PLACES=131, PETRI_TRANSITIONS=111} [2024-06-21 19:17:49,963 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 101 predicate places. [2024-06-21 19:17:49,963 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 111 transitions, 1005 flow [2024-06-21 19:17:49,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:49,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:17:49,963 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:17:49,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-21 19:17:49,963 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:17:49,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:17:49,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1125540898, now seen corresponding path program 3 times [2024-06-21 19:17:49,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:17:49,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160420278] [2024-06-21 19:17:49,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:17:49,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:17:49,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:17:50,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:17:50,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:17:50,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160420278] [2024-06-21 19:17:50,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160420278] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:17:50,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:17:50,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:17:50,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302949767] [2024-06-21 19:17:50,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:17:50,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:17:50,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:17:50,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:17:50,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:17:50,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-21 19:17:50,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 111 transitions, 1005 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:50,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:17:50,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-21 19:17:50,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:17:51,098 INFO L124 PetriNetUnfolderBase]: 231/457 cut-off events. [2024-06-21 19:17:51,099 INFO L125 PetriNetUnfolderBase]: For 16146/16146 co-relation queries the response was YES. [2024-06-21 19:17:51,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2885 conditions, 457 events. 231/457 cut-off events. For 16146/16146 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2122 event pairs, 29 based on Foata normal form. 2/456 useless extension candidates. Maximal degree in co-relation 2820. Up to 368 conditions per place. [2024-06-21 19:17:51,102 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 104 selfloop transitions, 17 changer transitions 0/125 dead transitions. [2024-06-21 19:17:51,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 125 transitions, 1301 flow [2024-06-21 19:17:51,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:17:51,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:17:51,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-21 19:17:51,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-21 19:17:51,103 INFO L175 Difference]: Start difference. First operand has 131 places, 111 transitions, 1005 flow. Second operand 9 states and 117 transitions. [2024-06-21 19:17:51,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 125 transitions, 1301 flow [2024-06-21 19:17:51,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 125 transitions, 1253 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-21 19:17:51,136 INFO L231 Difference]: Finished difference. Result has 134 places, 113 transitions, 1023 flow [2024-06-21 19:17:51,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=957, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1023, PETRI_PLACES=134, PETRI_TRANSITIONS=113} [2024-06-21 19:17:51,137 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 104 predicate places. [2024-06-21 19:17:51,137 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 113 transitions, 1023 flow [2024-06-21 19:17:51,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:51,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:17:51,137 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:17:51,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-21 19:17:51,137 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:17:51,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:17:51,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1200378204, now seen corresponding path program 1 times [2024-06-21 19:17:51,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:17:51,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899254674] [2024-06-21 19:17:51,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:17:51,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:17:51,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:17:52,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:17:52,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:17:52,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899254674] [2024-06-21 19:17:52,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899254674] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:17:52,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:17:52,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:17:52,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24813013] [2024-06-21 19:17:52,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:17:52,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:17:52,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:17:52,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:17:52,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:17:52,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-21 19:17:52,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 113 transitions, 1023 flow. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:52,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:17:52,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-21 19:17:52,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:17:53,011 INFO L124 PetriNetUnfolderBase]: 247/488 cut-off events. [2024-06-21 19:17:53,012 INFO L125 PetriNetUnfolderBase]: For 18663/18663 co-relation queries the response was YES. [2024-06-21 19:17:53,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3173 conditions, 488 events. 247/488 cut-off events. For 18663/18663 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2302 event pairs, 20 based on Foata normal form. 2/489 useless extension candidates. Maximal degree in co-relation 3106. Up to 328 conditions per place. [2024-06-21 19:17:53,017 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 82 selfloop transitions, 44 changer transitions 0/130 dead transitions. [2024-06-21 19:17:53,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 130 transitions, 1467 flow [2024-06-21 19:17:53,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:17:53,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:17:53,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 131 transitions. [2024-06-21 19:17:53,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46953405017921146 [2024-06-21 19:17:53,018 INFO L175 Difference]: Start difference. First operand has 134 places, 113 transitions, 1023 flow. Second operand 9 states and 131 transitions. [2024-06-21 19:17:53,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 130 transitions, 1467 flow [2024-06-21 19:17:53,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 130 transitions, 1421 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-21 19:17:53,054 INFO L231 Difference]: Finished difference. Result has 137 places, 118 transitions, 1156 flow [2024-06-21 19:17:53,054 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=977, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1156, PETRI_PLACES=137, PETRI_TRANSITIONS=118} [2024-06-21 19:17:53,055 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 107 predicate places. [2024-06-21 19:17:53,055 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 118 transitions, 1156 flow [2024-06-21 19:17:53,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:53,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:17:53,055 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:17:53,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-21 19:17:53,056 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:17:53,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:17:53,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1028489470, now seen corresponding path program 2 times [2024-06-21 19:17:53,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:17:53,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753912444] [2024-06-21 19:17:53,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:17:53,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:17:53,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:17:54,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:17:54,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:17:54,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753912444] [2024-06-21 19:17:54,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753912444] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:17:54,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:17:54,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:17:54,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830699029] [2024-06-21 19:17:54,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:17:54,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:17:54,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:17:54,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:17:54,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:17:55,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-21 19:17:55,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 118 transitions, 1156 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:55,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:17:55,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-21 19:17:55,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:17:55,507 INFO L124 PetriNetUnfolderBase]: 245/485 cut-off events. [2024-06-21 19:17:55,507 INFO L125 PetriNetUnfolderBase]: For 17986/17986 co-relation queries the response was YES. [2024-06-21 19:17:55,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3217 conditions, 485 events. 245/485 cut-off events. For 17986/17986 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2268 event pairs, 28 based on Foata normal form. 1/485 useless extension candidates. Maximal degree in co-relation 3149. Up to 327 conditions per place. [2024-06-21 19:17:55,510 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 83 selfloop transitions, 44 changer transitions 0/131 dead transitions. [2024-06-21 19:17:55,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 131 transitions, 1550 flow [2024-06-21 19:17:55,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:17:55,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:17:55,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 132 transitions. [2024-06-21 19:17:55,521 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4731182795698925 [2024-06-21 19:17:55,521 INFO L175 Difference]: Start difference. First operand has 137 places, 118 transitions, 1156 flow. Second operand 9 states and 132 transitions. [2024-06-21 19:17:55,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 131 transitions, 1550 flow [2024-06-21 19:17:55,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 131 transitions, 1463 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-21 19:17:55,559 INFO L231 Difference]: Finished difference. Result has 141 places, 120 transitions, 1199 flow [2024-06-21 19:17:55,559 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1071, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1199, PETRI_PLACES=141, PETRI_TRANSITIONS=120} [2024-06-21 19:17:55,560 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 111 predicate places. [2024-06-21 19:17:55,560 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 120 transitions, 1199 flow [2024-06-21 19:17:55,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:55,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:17:55,561 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:17:55,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-21 19:17:55,561 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:17:55,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:17:55,561 INFO L85 PathProgramCache]: Analyzing trace with hash -962611246, now seen corresponding path program 1 times [2024-06-21 19:17:55,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:17:55,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650267249] [2024-06-21 19:17:55,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:17:55,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:17:55,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:17:57,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:17:57,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:17:57,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650267249] [2024-06-21 19:17:57,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650267249] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:17:57,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:17:57,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:17:57,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823201786] [2024-06-21 19:17:57,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:17:57,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:17:57,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:17:57,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:17:57,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:17:57,699 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-21 19:17:57,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 120 transitions, 1199 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:57,700 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:17:57,700 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-21 19:17:57,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:17:58,006 INFO L124 PetriNetUnfolderBase]: 261/521 cut-off events. [2024-06-21 19:17:58,006 INFO L125 PetriNetUnfolderBase]: For 27250/27250 co-relation queries the response was YES. [2024-06-21 19:17:58,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3457 conditions, 521 events. 261/521 cut-off events. For 27250/27250 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2491 event pairs, 24 based on Foata normal form. 10/530 useless extension candidates. Maximal degree in co-relation 3387. Up to 367 conditions per place. [2024-06-21 19:17:58,010 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 97 selfloop transitions, 31 changer transitions 4/136 dead transitions. [2024-06-21 19:17:58,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 136 transitions, 1561 flow [2024-06-21 19:17:58,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:17:58,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:17:58,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 144 transitions. [2024-06-21 19:17:58,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4645161290322581 [2024-06-21 19:17:58,011 INFO L175 Difference]: Start difference. First operand has 141 places, 120 transitions, 1199 flow. Second operand 10 states and 144 transitions. [2024-06-21 19:17:58,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 136 transitions, 1561 flow [2024-06-21 19:17:58,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 136 transitions, 1472 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-21 19:17:58,047 INFO L231 Difference]: Finished difference. Result has 145 places, 120 transitions, 1201 flow [2024-06-21 19:17:58,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1110, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1201, PETRI_PLACES=145, PETRI_TRANSITIONS=120} [2024-06-21 19:17:58,048 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 115 predicate places. [2024-06-21 19:17:58,048 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 120 transitions, 1201 flow [2024-06-21 19:17:58,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:58,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:17:58,048 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:17:58,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-21 19:17:58,051 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:17:58,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:17:58,052 INFO L85 PathProgramCache]: Analyzing trace with hash 549441602, now seen corresponding path program 4 times [2024-06-21 19:17:58,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:17:58,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338066003] [2024-06-21 19:17:58,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:17:58,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:17:58,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:17:59,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:17:59,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:17:59,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338066003] [2024-06-21 19:17:59,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338066003] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:17:59,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:17:59,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:17:59,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228074422] [2024-06-21 19:17:59,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:17:59,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:17:59,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:17:59,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:17:59,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:17:59,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-21 19:17:59,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 120 transitions, 1201 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:59,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:17:59,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-21 19:17:59,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:17:59,523 INFO L124 PetriNetUnfolderBase]: 259/516 cut-off events. [2024-06-21 19:17:59,523 INFO L125 PetriNetUnfolderBase]: For 21308/21308 co-relation queries the response was YES. [2024-06-21 19:17:59,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3457 conditions, 516 events. 259/516 cut-off events. For 21308/21308 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2479 event pairs, 35 based on Foata normal form. 2/514 useless extension candidates. Maximal degree in co-relation 3386. Up to 410 conditions per place. [2024-06-21 19:17:59,527 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 96 selfloop transitions, 29 changer transitions 0/129 dead transitions. [2024-06-21 19:17:59,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 129 transitions, 1489 flow [2024-06-21 19:17:59,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:17:59,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:17:59,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-21 19:17:59,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4157706093189964 [2024-06-21 19:17:59,533 INFO L175 Difference]: Start difference. First operand has 145 places, 120 transitions, 1201 flow. Second operand 9 states and 116 transitions. [2024-06-21 19:17:59,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 129 transitions, 1489 flow [2024-06-21 19:17:59,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 129 transitions, 1405 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-21 19:17:59,570 INFO L231 Difference]: Finished difference. Result has 146 places, 121 transitions, 1201 flow [2024-06-21 19:17:59,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1117, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1201, PETRI_PLACES=146, PETRI_TRANSITIONS=121} [2024-06-21 19:17:59,570 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 116 predicate places. [2024-06-21 19:17:59,571 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 121 transitions, 1201 flow [2024-06-21 19:17:59,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:59,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:17:59,571 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:17:59,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-21 19:17:59,571 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:17:59,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:17:59,572 INFO L85 PathProgramCache]: Analyzing trace with hash 256246208, now seen corresponding path program 3 times [2024-06-21 19:17:59,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:17:59,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078141584] [2024-06-21 19:17:59,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:17:59,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:17:59,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:18:01,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:18:01,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:18:01,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078141584] [2024-06-21 19:18:01,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078141584] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:18:01,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:18:01,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:18:01,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294522856] [2024-06-21 19:18:01,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:18:01,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:18:01,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:18:01,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:18:01,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:18:01,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-21 19:18:01,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 121 transitions, 1201 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:01,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:18:01,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-21 19:18:01,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:18:02,111 INFO L124 PetriNetUnfolderBase]: 285/564 cut-off events. [2024-06-21 19:18:02,111 INFO L125 PetriNetUnfolderBase]: For 25825/25825 co-relation queries the response was YES. [2024-06-21 19:18:02,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3954 conditions, 564 events. 285/564 cut-off events. For 25825/25825 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2786 event pairs, 40 based on Foata normal form. 2/561 useless extension candidates. Maximal degree in co-relation 3882. Up to 299 conditions per place. [2024-06-21 19:18:02,115 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 78 selfloop transitions, 62 changer transitions 0/144 dead transitions. [2024-06-21 19:18:02,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 144 transitions, 1971 flow [2024-06-21 19:18:02,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:18:02,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:18:02,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 138 transitions. [2024-06-21 19:18:02,116 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4946236559139785 [2024-06-21 19:18:02,116 INFO L175 Difference]: Start difference. First operand has 146 places, 121 transitions, 1201 flow. Second operand 9 states and 138 transitions. [2024-06-21 19:18:02,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 144 transitions, 1971 flow [2024-06-21 19:18:02,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 144 transitions, 1897 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-21 19:18:02,156 INFO L231 Difference]: Finished difference. Result has 148 places, 130 transitions, 1430 flow [2024-06-21 19:18:02,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1127, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1430, PETRI_PLACES=148, PETRI_TRANSITIONS=130} [2024-06-21 19:18:02,157 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 118 predicate places. [2024-06-21 19:18:02,157 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 130 transitions, 1430 flow [2024-06-21 19:18:02,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:02,157 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:18:02,157 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:18:02,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-21 19:18:02,157 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:18:02,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:18:02,158 INFO L85 PathProgramCache]: Analyzing trace with hash 256009058, now seen corresponding path program 4 times [2024-06-21 19:18:02,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:18:02,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754302450] [2024-06-21 19:18:02,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:18:02,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:18:02,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:18:04,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:18:04,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:18:04,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754302450] [2024-06-21 19:18:04,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754302450] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:18:04,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:18:04,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:18:04,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057436663] [2024-06-21 19:18:04,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:18:04,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:18:04,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:18:04,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:18:04,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:18:04,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-21 19:18:04,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 130 transitions, 1430 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:04,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:18:04,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-21 19:18:04,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:18:05,429 INFO L124 PetriNetUnfolderBase]: 283/565 cut-off events. [2024-06-21 19:18:05,429 INFO L125 PetriNetUnfolderBase]: For 25180/25180 co-relation queries the response was YES. [2024-06-21 19:18:05,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4011 conditions, 565 events. 283/565 cut-off events. For 25180/25180 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2792 event pairs, 42 based on Foata normal form. 1/561 useless extension candidates. Maximal degree in co-relation 3938. Up to 358 conditions per place. [2024-06-21 19:18:05,433 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 84 selfloop transitions, 60 changer transitions 0/148 dead transitions. [2024-06-21 19:18:05,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 148 transitions, 2068 flow [2024-06-21 19:18:05,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:18:05,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:18:05,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 132 transitions. [2024-06-21 19:18:05,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4731182795698925 [2024-06-21 19:18:05,435 INFO L175 Difference]: Start difference. First operand has 148 places, 130 transitions, 1430 flow. Second operand 9 states and 132 transitions. [2024-06-21 19:18:05,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 148 transitions, 2068 flow [2024-06-21 19:18:05,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 148 transitions, 1933 flow, removed 53 selfloop flow, removed 3 redundant places. [2024-06-21 19:18:05,482 INFO L231 Difference]: Finished difference. Result has 156 places, 138 transitions, 1625 flow [2024-06-21 19:18:05,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1329, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1625, PETRI_PLACES=156, PETRI_TRANSITIONS=138} [2024-06-21 19:18:05,483 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 126 predicate places. [2024-06-21 19:18:05,483 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 138 transitions, 1625 flow [2024-06-21 19:18:05,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:05,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:18:05,483 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:18:05,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-21 19:18:05,484 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:18:05,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:18:05,484 INFO L85 PathProgramCache]: Analyzing trace with hash 541346078, now seen corresponding path program 5 times [2024-06-21 19:18:05,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:18:05,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893855984] [2024-06-21 19:18:05,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:18:05,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:18:05,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:18:07,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:18:07,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:18:07,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893855984] [2024-06-21 19:18:07,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893855984] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:18:07,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:18:07,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:18:07,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565094762] [2024-06-21 19:18:07,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:18:07,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:18:07,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:18:07,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:18:07,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:18:07,340 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-21 19:18:07,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 138 transitions, 1625 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:07,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:18:07,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-21 19:18:07,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:18:07,784 INFO L124 PetriNetUnfolderBase]: 284/568 cut-off events. [2024-06-21 19:18:07,784 INFO L125 PetriNetUnfolderBase]: For 26448/26448 co-relation queries the response was YES. [2024-06-21 19:18:07,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4074 conditions, 568 events. 284/568 cut-off events. For 26448/26448 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2833 event pairs, 39 based on Foata normal form. 2/569 useless extension candidates. Maximal degree in co-relation 3997. Up to 476 conditions per place. [2024-06-21 19:18:07,788 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 121 selfloop transitions, 24 changer transitions 0/149 dead transitions. [2024-06-21 19:18:07,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 149 transitions, 2061 flow [2024-06-21 19:18:07,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:18:07,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:18:07,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-21 19:18:07,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4064516129032258 [2024-06-21 19:18:07,789 INFO L175 Difference]: Start difference. First operand has 156 places, 138 transitions, 1625 flow. Second operand 10 states and 126 transitions. [2024-06-21 19:18:07,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 149 transitions, 2061 flow [2024-06-21 19:18:07,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 149 transitions, 1975 flow, removed 25 selfloop flow, removed 4 redundant places. [2024-06-21 19:18:07,842 INFO L231 Difference]: Finished difference. Result has 162 places, 140 transitions, 1632 flow [2024-06-21 19:18:07,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1539, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1632, PETRI_PLACES=162, PETRI_TRANSITIONS=140} [2024-06-21 19:18:07,843 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 132 predicate places. [2024-06-21 19:18:07,843 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 140 transitions, 1632 flow [2024-06-21 19:18:07,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:07,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:18:07,843 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:18:07,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-21 19:18:07,843 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:18:07,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:18:07,844 INFO L85 PathProgramCache]: Analyzing trace with hash 894664990, now seen corresponding path program 6 times [2024-06-21 19:18:07,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:18:07,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095009360] [2024-06-21 19:18:07,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:18:07,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:18:07,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:18:09,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:18:09,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:18:09,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095009360] [2024-06-21 19:18:09,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095009360] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:18:09,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:18:09,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:18:09,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472452665] [2024-06-21 19:18:09,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:18:09,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:18:09,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:18:09,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:18:09,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:18:09,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-21 19:18:09,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 140 transitions, 1632 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:09,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:18:09,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-21 19:18:09,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:18:09,772 INFO L124 PetriNetUnfolderBase]: 290/575 cut-off events. [2024-06-21 19:18:09,772 INFO L125 PetriNetUnfolderBase]: For 27578/27578 co-relation queries the response was YES. [2024-06-21 19:18:09,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4189 conditions, 575 events. 290/575 cut-off events. For 27578/27578 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2870 event pairs, 32 based on Foata normal form. 2/573 useless extension candidates. Maximal degree in co-relation 4110. Up to 428 conditions per place. [2024-06-21 19:18:09,776 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 109 selfloop transitions, 40 changer transitions 0/153 dead transitions. [2024-06-21 19:18:09,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 153 transitions, 2132 flow [2024-06-21 19:18:09,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:18:09,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:18:09,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 131 transitions. [2024-06-21 19:18:09,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46953405017921146 [2024-06-21 19:18:09,777 INFO L175 Difference]: Start difference. First operand has 162 places, 140 transitions, 1632 flow. Second operand 9 states and 131 transitions. [2024-06-21 19:18:09,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 153 transitions, 2132 flow [2024-06-21 19:18:09,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 153 transitions, 2054 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-21 19:18:09,832 INFO L231 Difference]: Finished difference. Result has 163 places, 144 transitions, 1734 flow [2024-06-21 19:18:09,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1554, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1734, PETRI_PLACES=163, PETRI_TRANSITIONS=144} [2024-06-21 19:18:09,832 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 133 predicate places. [2024-06-21 19:18:09,832 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 144 transitions, 1734 flow [2024-06-21 19:18:09,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:09,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:18:09,833 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:18:09,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-21 19:18:09,833 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:18:09,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:18:09,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1712451348, now seen corresponding path program 7 times [2024-06-21 19:18:09,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:18:09,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095282486] [2024-06-21 19:18:09,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:18:09,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:18:09,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:18:11,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:18:11,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:18:11,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095282486] [2024-06-21 19:18:11,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095282486] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:18:11,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:18:11,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:18:11,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980985245] [2024-06-21 19:18:11,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:18:11,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:18:11,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:18:11,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:18:11,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:18:11,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-21 19:18:11,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 144 transitions, 1734 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:11,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:18:11,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-21 19:18:11,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:18:12,227 INFO L124 PetriNetUnfolderBase]: 288/572 cut-off events. [2024-06-21 19:18:12,227 INFO L125 PetriNetUnfolderBase]: For 25889/25889 co-relation queries the response was YES. [2024-06-21 19:18:12,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4154 conditions, 572 events. 288/572 cut-off events. For 25889/25889 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2840 event pairs, 41 based on Foata normal form. 1/568 useless extension candidates. Maximal degree in co-relation 4074. Up to 427 conditions per place. [2024-06-21 19:18:12,231 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 109 selfloop transitions, 40 changer transitions 0/153 dead transitions. [2024-06-21 19:18:12,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 153 transitions, 2146 flow [2024-06-21 19:18:12,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:18:12,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:18:12,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 132 transitions. [2024-06-21 19:18:12,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4731182795698925 [2024-06-21 19:18:12,234 INFO L175 Difference]: Start difference. First operand has 163 places, 144 transitions, 1734 flow. Second operand 9 states and 132 transitions. [2024-06-21 19:18:12,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 153 transitions, 2146 flow [2024-06-21 19:18:12,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 153 transitions, 1909 flow, removed 43 selfloop flow, removed 9 redundant places. [2024-06-21 19:18:12,294 INFO L231 Difference]: Finished difference. Result has 163 places, 144 transitions, 1582 flow [2024-06-21 19:18:12,294 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1497, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1582, PETRI_PLACES=163, PETRI_TRANSITIONS=144} [2024-06-21 19:18:12,294 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 133 predicate places. [2024-06-21 19:18:12,294 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 144 transitions, 1582 flow [2024-06-21 19:18:12,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:12,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:18:12,295 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:18:12,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-21 19:18:12,295 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:18:12,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:18:12,295 INFO L85 PathProgramCache]: Analyzing trace with hash 887998750, now seen corresponding path program 8 times [2024-06-21 19:18:12,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:18:12,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055249434] [2024-06-21 19:18:12,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:18:12,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:18:12,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:18:13,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:18:13,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:18:13,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055249434] [2024-06-21 19:18:13,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055249434] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:18:13,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:18:13,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:18:13,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308136618] [2024-06-21 19:18:13,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:18:13,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:18:13,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:18:13,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:18:13,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:18:14,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-21 19:18:14,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 144 transitions, 1582 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:14,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:18:14,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-21 19:18:14,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:18:14,291 INFO L124 PetriNetUnfolderBase]: 286/573 cut-off events. [2024-06-21 19:18:14,291 INFO L125 PetriNetUnfolderBase]: For 25177/25177 co-relation queries the response was YES. [2024-06-21 19:18:14,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3919 conditions, 573 events. 286/573 cut-off events. For 25177/25177 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2864 event pairs, 43 based on Foata normal form. 1/569 useless extension candidates. Maximal degree in co-relation 3840. Up to 455 conditions per place. [2024-06-21 19:18:14,295 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 119 selfloop transitions, 29 changer transitions 0/152 dead transitions. [2024-06-21 19:18:14,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 152 transitions, 1896 flow [2024-06-21 19:18:14,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:18:14,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:18:14,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 125 transitions. [2024-06-21 19:18:14,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44802867383512546 [2024-06-21 19:18:14,296 INFO L175 Difference]: Start difference. First operand has 163 places, 144 transitions, 1582 flow. Second operand 9 states and 125 transitions. [2024-06-21 19:18:14,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 152 transitions, 1896 flow [2024-06-21 19:18:14,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 152 transitions, 1795 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-21 19:18:14,360 INFO L231 Difference]: Finished difference. Result has 166 places, 144 transitions, 1544 flow [2024-06-21 19:18:14,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1481, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1544, PETRI_PLACES=166, PETRI_TRANSITIONS=144} [2024-06-21 19:18:14,361 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 136 predicate places. [2024-06-21 19:18:14,361 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 144 transitions, 1544 flow [2024-06-21 19:18:14,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:14,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:18:14,361 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:18:14,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-21 19:18:14,362 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:18:14,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:18:14,362 INFO L85 PathProgramCache]: Analyzing trace with hash 551830526, now seen corresponding path program 2 times [2024-06-21 19:18:14,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:18:14,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234377071] [2024-06-21 19:18:14,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:18:14,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:18:14,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:18:16,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:18:16,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:18:16,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234377071] [2024-06-21 19:18:16,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234377071] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:18:16,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:18:16,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:18:16,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962806579] [2024-06-21 19:18:16,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:18:16,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:18:16,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:18:16,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:18:16,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:18:16,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-21 19:18:16,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 144 transitions, 1544 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:16,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:18:16,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-21 19:18:16,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:18:17,125 INFO L124 PetriNetUnfolderBase]: 297/597 cut-off events. [2024-06-21 19:18:17,126 INFO L125 PetriNetUnfolderBase]: For 30554/30554 co-relation queries the response was YES. [2024-06-21 19:18:17,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4187 conditions, 597 events. 297/597 cut-off events. For 30554/30554 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3006 event pairs, 47 based on Foata normal form. 2/598 useless extension candidates. Maximal degree in co-relation 4107. Up to 488 conditions per place. [2024-06-21 19:18:17,130 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 133 selfloop transitions, 23 changer transitions 0/160 dead transitions. [2024-06-21 19:18:17,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 160 transitions, 2048 flow [2024-06-21 19:18:17,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 19:18:17,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 19:18:17,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 155 transitions. [2024-06-21 19:18:17,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38461538461538464 [2024-06-21 19:18:17,132 INFO L175 Difference]: Start difference. First operand has 166 places, 144 transitions, 1544 flow. Second operand 13 states and 155 transitions. [2024-06-21 19:18:17,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 160 transitions, 2048 flow [2024-06-21 19:18:17,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 160 transitions, 1957 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-21 19:18:17,193 INFO L231 Difference]: Finished difference. Result has 171 places, 146 transitions, 1569 flow [2024-06-21 19:18:17,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1453, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1569, PETRI_PLACES=171, PETRI_TRANSITIONS=146} [2024-06-21 19:18:17,193 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 141 predicate places. [2024-06-21 19:18:17,194 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 146 transitions, 1569 flow [2024-06-21 19:18:17,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:17,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:18:17,194 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:18:17,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-21 19:18:17,194 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:18:17,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:18:17,194 INFO L85 PathProgramCache]: Analyzing trace with hash 556121730, now seen corresponding path program 3 times [2024-06-21 19:18:17,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:18:17,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714543911] [2024-06-21 19:18:17,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:18:17,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:18:17,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:18:19,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:18:19,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:18:19,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714543911] [2024-06-21 19:18:19,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714543911] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:18:19,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:18:19,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:18:19,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543484359] [2024-06-21 19:18:19,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:18:19,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:18:19,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:18:19,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:18:19,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:18:19,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-21 19:18:19,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 146 transitions, 1569 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:19,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:18:19,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-21 19:18:19,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:18:19,503 INFO L124 PetriNetUnfolderBase]: 301/600 cut-off events. [2024-06-21 19:18:19,503 INFO L125 PetriNetUnfolderBase]: For 32842/32842 co-relation queries the response was YES. [2024-06-21 19:18:19,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4263 conditions, 600 events. 301/600 cut-off events. For 32842/32842 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3041 event pairs, 35 based on Foata normal form. 2/598 useless extension candidates. Maximal degree in co-relation 4182. Up to 484 conditions per place. [2024-06-21 19:18:19,508 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 126 selfloop transitions, 27 changer transitions 0/157 dead transitions. [2024-06-21 19:18:19,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 157 transitions, 1931 flow [2024-06-21 19:18:19,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:18:19,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:18:19,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 128 transitions. [2024-06-21 19:18:19,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45878136200716846 [2024-06-21 19:18:19,509 INFO L175 Difference]: Start difference. First operand has 171 places, 146 transitions, 1569 flow. Second operand 9 states and 128 transitions. [2024-06-21 19:18:19,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 157 transitions, 1931 flow [2024-06-21 19:18:19,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 157 transitions, 1866 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-21 19:18:19,577 INFO L231 Difference]: Finished difference. Result has 171 places, 147 transitions, 1598 flow [2024-06-21 19:18:19,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1504, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1598, PETRI_PLACES=171, PETRI_TRANSITIONS=147} [2024-06-21 19:18:19,577 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 141 predicate places. [2024-06-21 19:18:19,577 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 147 transitions, 1598 flow [2024-06-21 19:18:19,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:19,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:18:19,578 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:18:19,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-21 19:18:19,578 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:18:19,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:18:19,578 INFO L85 PathProgramCache]: Analyzing trace with hash 541355006, now seen corresponding path program 4 times [2024-06-21 19:18:19,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:18:19,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242571621] [2024-06-21 19:18:19,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:18:19,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:18:19,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:18:21,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:18:21,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:18:21,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242571621] [2024-06-21 19:18:21,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242571621] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:18:21,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:18:21,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:18:21,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689064499] [2024-06-21 19:18:21,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:18:21,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:18:21,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:18:21,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:18:21,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:18:21,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-21 19:18:21,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 147 transitions, 1598 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:21,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:18:21,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-21 19:18:21,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:18:22,103 INFO L124 PetriNetUnfolderBase]: 305/611 cut-off events. [2024-06-21 19:18:22,104 INFO L125 PetriNetUnfolderBase]: For 33208/33208 co-relation queries the response was YES. [2024-06-21 19:18:22,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4332 conditions, 611 events. 305/611 cut-off events. For 33208/33208 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3105 event pairs, 49 based on Foata normal form. 2/612 useless extension candidates. Maximal degree in co-relation 4250. Up to 523 conditions per place. [2024-06-21 19:18:22,109 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 134 selfloop transitions, 20 changer transitions 0/158 dead transitions. [2024-06-21 19:18:22,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 158 transitions, 1956 flow [2024-06-21 19:18:22,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:18:22,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:18:22,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-21 19:18:22,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2024-06-21 19:18:22,110 INFO L175 Difference]: Start difference. First operand has 171 places, 147 transitions, 1598 flow. Second operand 11 states and 134 transitions. [2024-06-21 19:18:22,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 158 transitions, 1956 flow [2024-06-21 19:18:22,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 158 transitions, 1872 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-21 19:18:22,182 INFO L231 Difference]: Finished difference. Result has 175 places, 148 transitions, 1588 flow [2024-06-21 19:18:22,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1514, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1588, PETRI_PLACES=175, PETRI_TRANSITIONS=148} [2024-06-21 19:18:22,182 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 145 predicate places. [2024-06-21 19:18:22,182 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 148 transitions, 1588 flow [2024-06-21 19:18:22,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:22,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:18:22,183 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:18:22,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-21 19:18:22,183 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:18:22,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:18:22,183 INFO L85 PathProgramCache]: Analyzing trace with hash 546222784, now seen corresponding path program 5 times [2024-06-21 19:18:22,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:18:22,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774418308] [2024-06-21 19:18:22,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:18:22,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:18:22,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:18:25,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:18:25,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:18:25,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774418308] [2024-06-21 19:18:25,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774418308] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:18:25,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:18:25,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:18:25,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425826679] [2024-06-21 19:18:25,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:18:25,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:18:25,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:18:25,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:18:25,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:18:25,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-21 19:18:25,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 148 transitions, 1588 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:25,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:18:25,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-21 19:18:25,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:18:26,272 INFO L124 PetriNetUnfolderBase]: 302/606 cut-off events. [2024-06-21 19:18:26,272 INFO L125 PetriNetUnfolderBase]: For 31770/31770 co-relation queries the response was YES. [2024-06-21 19:18:26,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4142 conditions, 606 events. 302/606 cut-off events. For 31770/31770 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3078 event pairs, 41 based on Foata normal form. 2/607 useless extension candidates. Maximal degree in co-relation 4058. Up to 518 conditions per place. [2024-06-21 19:18:26,276 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 134 selfloop transitions, 21 changer transitions 0/159 dead transitions. [2024-06-21 19:18:26,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 159 transitions, 1922 flow [2024-06-21 19:18:26,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:18:26,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:18:26,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-21 19:18:26,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39882697947214074 [2024-06-21 19:18:26,277 INFO L175 Difference]: Start difference. First operand has 175 places, 148 transitions, 1588 flow. Second operand 11 states and 136 transitions. [2024-06-21 19:18:26,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 159 transitions, 1922 flow [2024-06-21 19:18:26,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 159 transitions, 1836 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-21 19:18:26,350 INFO L231 Difference]: Finished difference. Result has 177 places, 148 transitions, 1548 flow [2024-06-21 19:18:26,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1502, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1548, PETRI_PLACES=177, PETRI_TRANSITIONS=148} [2024-06-21 19:18:26,351 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 147 predicate places. [2024-06-21 19:18:26,351 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 148 transitions, 1548 flow [2024-06-21 19:18:26,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:26,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:18:26,352 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:18:26,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-21 19:18:26,352 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:18:26,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:18:26,352 INFO L85 PathProgramCache]: Analyzing trace with hash 251003584, now seen corresponding path program 6 times [2024-06-21 19:18:26,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:18:26,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749977009] [2024-06-21 19:18:26,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:18:26,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:18:26,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:18:28,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:18:28,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:18:28,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749977009] [2024-06-21 19:18:28,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749977009] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:18:28,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:18:28,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:18:28,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302831443] [2024-06-21 19:18:28,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:18:28,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:18:28,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:18:28,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:18:28,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:18:28,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-21 19:18:28,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 148 transitions, 1548 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:28,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:18:28,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-21 19:18:28,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:18:28,644 INFO L124 PetriNetUnfolderBase]: 299/598 cut-off events. [2024-06-21 19:18:28,644 INFO L125 PetriNetUnfolderBase]: For 29388/29388 co-relation queries the response was YES. [2024-06-21 19:18:28,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3922 conditions, 598 events. 299/598 cut-off events. For 29388/29388 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3036 event pairs, 33 based on Foata normal form. 2/596 useless extension candidates. Maximal degree in co-relation 3837. Up to 427 conditions per place. [2024-06-21 19:18:28,648 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 107 selfloop transitions, 47 changer transitions 0/158 dead transitions. [2024-06-21 19:18:28,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 158 transitions, 1878 flow [2024-06-21 19:18:28,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:18:28,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:18:28,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 134 transitions. [2024-06-21 19:18:28,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48028673835125446 [2024-06-21 19:18:28,649 INFO L175 Difference]: Start difference. First operand has 177 places, 148 transitions, 1548 flow. Second operand 9 states and 134 transitions. [2024-06-21 19:18:28,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 158 transitions, 1878 flow [2024-06-21 19:18:28,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 158 transitions, 1830 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-21 19:18:28,714 INFO L231 Difference]: Finished difference. Result has 176 places, 148 transitions, 1598 flow [2024-06-21 19:18:28,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1500, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1598, PETRI_PLACES=176, PETRI_TRANSITIONS=148} [2024-06-21 19:18:28,715 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 146 predicate places. [2024-06-21 19:18:28,715 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 148 transitions, 1598 flow [2024-06-21 19:18:28,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:28,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:18:28,715 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:18:28,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-21 19:18:28,716 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:18:28,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:18:28,716 INFO L85 PathProgramCache]: Analyzing trace with hash 307357120, now seen corresponding path program 5 times [2024-06-21 19:18:28,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:18:28,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813522498] [2024-06-21 19:18:28,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:18:28,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:18:28,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:18:29,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:18:29,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:18:29,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813522498] [2024-06-21 19:18:29,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813522498] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:18:29,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:18:29,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:18:29,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025755945] [2024-06-21 19:18:29,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:18:29,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:18:29,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:18:29,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:18:29,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:18:29,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-21 19:18:29,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 148 transitions, 1598 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:29,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:18:29,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-21 19:18:29,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:18:30,029 INFO L124 PetriNetUnfolderBase]: 310/623 cut-off events. [2024-06-21 19:18:30,029 INFO L125 PetriNetUnfolderBase]: For 30169/30169 co-relation queries the response was YES. [2024-06-21 19:18:30,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4153 conditions, 623 events. 310/623 cut-off events. For 30169/30169 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3176 event pairs, 34 based on Foata normal form. 2/624 useless extension candidates. Maximal degree in co-relation 4068. Up to 524 conditions per place. [2024-06-21 19:18:30,034 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 142 selfloop transitions, 20 changer transitions 0/166 dead transitions. [2024-06-21 19:18:30,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 166 transitions, 2032 flow [2024-06-21 19:18:30,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:18:30,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:18:30,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2024-06-21 19:18:30,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4265232974910394 [2024-06-21 19:18:30,035 INFO L175 Difference]: Start difference. First operand has 176 places, 148 transitions, 1598 flow. Second operand 9 states and 119 transitions. [2024-06-21 19:18:30,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 166 transitions, 2032 flow [2024-06-21 19:18:30,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 166 transitions, 1887 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-21 19:18:30,107 INFO L231 Difference]: Finished difference. Result has 178 places, 153 transitions, 1582 flow [2024-06-21 19:18:30,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1461, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1582, PETRI_PLACES=178, PETRI_TRANSITIONS=153} [2024-06-21 19:18:30,108 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 148 predicate places. [2024-06-21 19:18:30,108 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 153 transitions, 1582 flow [2024-06-21 19:18:30,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:30,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:18:30,108 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:18:30,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-21 19:18:30,108 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:18:30,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:18:30,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1649840984, now seen corresponding path program 6 times [2024-06-21 19:18:30,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:18:30,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239135390] [2024-06-21 19:18:30,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:18:30,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:18:30,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:18:30,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:18:30,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:18:30,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239135390] [2024-06-21 19:18:30,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239135390] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:18:30,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:18:30,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:18:30,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140929094] [2024-06-21 19:18:30,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:18:30,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:18:30,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:18:30,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:18:30,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:18:31,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-21 19:18:31,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 153 transitions, 1582 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:31,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:18:31,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-21 19:18:31,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:18:31,316 INFO L124 PetriNetUnfolderBase]: 319/642 cut-off events. [2024-06-21 19:18:31,317 INFO L125 PetriNetUnfolderBase]: For 31459/31459 co-relation queries the response was YES. [2024-06-21 19:18:31,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4126 conditions, 642 events. 319/642 cut-off events. For 31459/31459 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3323 event pairs, 25 based on Foata normal form. 2/643 useless extension candidates. Maximal degree in co-relation 4039. Up to 534 conditions per place. [2024-06-21 19:18:31,321 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 147 selfloop transitions, 19 changer transitions 0/170 dead transitions. [2024-06-21 19:18:31,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 170 transitions, 1984 flow [2024-06-21 19:18:31,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:18:31,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:18:31,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-21 19:18:31,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43010752688172044 [2024-06-21 19:18:31,322 INFO L175 Difference]: Start difference. First operand has 178 places, 153 transitions, 1582 flow. Second operand 9 states and 120 transitions. [2024-06-21 19:18:31,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 170 transitions, 1984 flow [2024-06-21 19:18:31,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 170 transitions, 1871 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-21 19:18:31,399 INFO L231 Difference]: Finished difference. Result has 181 places, 155 transitions, 1547 flow [2024-06-21 19:18:31,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1469, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1547, PETRI_PLACES=181, PETRI_TRANSITIONS=155} [2024-06-21 19:18:31,399 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 151 predicate places. [2024-06-21 19:18:31,399 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 155 transitions, 1547 flow [2024-06-21 19:18:31,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:31,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:18:31,400 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:18:31,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-21 19:18:31,400 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:18:31,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:18:31,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1047624768, now seen corresponding path program 7 times [2024-06-21 19:18:31,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:18:31,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704922279] [2024-06-21 19:18:31,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:18:31,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:18:31,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:18:32,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:18:32,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:18:32,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704922279] [2024-06-21 19:18:32,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704922279] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:18:32,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:18:32,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:18:32,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424634042] [2024-06-21 19:18:32,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:18:32,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:18:32,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:18:32,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:18:32,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:18:32,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-21 19:18:32,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 155 transitions, 1547 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:32,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:18:32,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-21 19:18:32,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:18:32,754 INFO L124 PetriNetUnfolderBase]: 323/649 cut-off events. [2024-06-21 19:18:32,754 INFO L125 PetriNetUnfolderBase]: For 32658/32658 co-relation queries the response was YES. [2024-06-21 19:18:32,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4060 conditions, 649 events. 323/649 cut-off events. For 32658/32658 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3384 event pairs, 31 based on Foata normal form. 2/650 useless extension candidates. Maximal degree in co-relation 3973. Up to 542 conditions per place. [2024-06-21 19:18:32,759 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 140 selfloop transitions, 24 changer transitions 0/168 dead transitions. [2024-06-21 19:18:32,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 168 transitions, 1931 flow [2024-06-21 19:18:32,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:18:32,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:18:32,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2024-06-21 19:18:32,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4265232974910394 [2024-06-21 19:18:32,760 INFO L175 Difference]: Start difference. First operand has 181 places, 155 transitions, 1547 flow. Second operand 9 states and 119 transitions. [2024-06-21 19:18:32,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 168 transitions, 1931 flow [2024-06-21 19:18:32,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 168 transitions, 1873 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-21 19:18:32,845 INFO L231 Difference]: Finished difference. Result has 184 places, 156 transitions, 1569 flow [2024-06-21 19:18:32,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1489, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1569, PETRI_PLACES=184, PETRI_TRANSITIONS=156} [2024-06-21 19:18:32,845 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 154 predicate places. [2024-06-21 19:18:32,845 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 156 transitions, 1569 flow [2024-06-21 19:18:32,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:32,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:18:32,845 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:18:32,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-21 19:18:32,845 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:18:32,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:18:32,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1146824098, now seen corresponding path program 8 times [2024-06-21 19:18:32,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:18:32,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256883556] [2024-06-21 19:18:32,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:18:32,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:18:32,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:18:33,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:18:33,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:18:33,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256883556] [2024-06-21 19:18:33,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256883556] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:18:33,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:18:33,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:18:33,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782907462] [2024-06-21 19:18:33,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:18:33,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:18:33,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:18:33,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:18:33,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:18:33,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-21 19:18:33,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 156 transitions, 1569 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:33,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:18:33,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-21 19:18:33,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:18:34,030 INFO L124 PetriNetUnfolderBase]: 332/671 cut-off events. [2024-06-21 19:18:34,030 INFO L125 PetriNetUnfolderBase]: For 33958/33958 co-relation queries the response was YES. [2024-06-21 19:18:34,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4166 conditions, 671 events. 332/671 cut-off events. For 33958/33958 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3547 event pairs, 32 based on Foata normal form. 2/672 useless extension candidates. Maximal degree in co-relation 4078. Up to 561 conditions per place. [2024-06-21 19:18:34,035 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 150 selfloop transitions, 20 changer transitions 0/174 dead transitions. [2024-06-21 19:18:34,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 174 transitions, 1987 flow [2024-06-21 19:18:34,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:18:34,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:18:34,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-21 19:18:34,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43010752688172044 [2024-06-21 19:18:34,036 INFO L175 Difference]: Start difference. First operand has 184 places, 156 transitions, 1569 flow. Second operand 9 states and 120 transitions. [2024-06-21 19:18:34,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 174 transitions, 1987 flow [2024-06-21 19:18:34,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 174 transitions, 1917 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-21 19:18:34,114 INFO L231 Difference]: Finished difference. Result has 187 places, 158 transitions, 1585 flow [2024-06-21 19:18:34,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1499, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1585, PETRI_PLACES=187, PETRI_TRANSITIONS=158} [2024-06-21 19:18:34,115 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 157 predicate places. [2024-06-21 19:18:34,115 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 158 transitions, 1585 flow [2024-06-21 19:18:34,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:34,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:18:34,115 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:18:34,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-21 19:18:34,115 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:18:34,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:18:34,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1608164548, now seen corresponding path program 9 times [2024-06-21 19:18:34,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:18:34,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466374904] [2024-06-21 19:18:34,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:18:34,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:18:34,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:18:34,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:18:34,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:18:34,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466374904] [2024-06-21 19:18:34,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466374904] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:18:34,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:18:34,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:18:34,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882772374] [2024-06-21 19:18:34,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:18:34,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:18:34,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:18:34,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:18:34,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:18:35,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-21 19:18:35,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 158 transitions, 1585 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:35,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:18:35,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-21 19:18:35,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:18:35,350 INFO L124 PetriNetUnfolderBase]: 336/679 cut-off events. [2024-06-21 19:18:35,350 INFO L125 PetriNetUnfolderBase]: For 35267/35267 co-relation queries the response was YES. [2024-06-21 19:18:35,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4225 conditions, 679 events. 336/679 cut-off events. For 35267/35267 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3607 event pairs, 39 based on Foata normal form. 2/680 useless extension candidates. Maximal degree in co-relation 4135. Up to 578 conditions per place. [2024-06-21 19:18:35,355 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 149 selfloop transitions, 21 changer transitions 0/174 dead transitions. [2024-06-21 19:18:35,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 174 transitions, 2005 flow [2024-06-21 19:18:35,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:18:35,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:18:35,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2024-06-21 19:18:35,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4265232974910394 [2024-06-21 19:18:35,355 INFO L175 Difference]: Start difference. First operand has 187 places, 158 transitions, 1585 flow. Second operand 9 states and 119 transitions. [2024-06-21 19:18:35,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 174 transitions, 2005 flow [2024-06-21 19:18:35,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 174 transitions, 1935 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-21 19:18:35,442 INFO L231 Difference]: Finished difference. Result has 191 places, 160 transitions, 1612 flow [2024-06-21 19:18:35,442 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1515, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1612, PETRI_PLACES=191, PETRI_TRANSITIONS=160} [2024-06-21 19:18:35,443 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 161 predicate places. [2024-06-21 19:18:35,443 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 160 transitions, 1612 flow [2024-06-21 19:18:35,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:35,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:18:35,443 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:18:35,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-21 19:18:35,443 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:18:35,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:18:35,443 INFO L85 PathProgramCache]: Analyzing trace with hash 301399974, now seen corresponding path program 10 times [2024-06-21 19:18:35,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:18:35,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288813975] [2024-06-21 19:18:35,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:18:35,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:18:35,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:18:36,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:18:36,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:18:36,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288813975] [2024-06-21 19:18:36,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288813975] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:18:36,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:18:36,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 19:18:36,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142124448] [2024-06-21 19:18:36,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:18:36,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 19:18:36,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:18:36,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 19:18:36,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-21 19:18:36,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 31 [2024-06-21 19:18:36,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 160 transitions, 1612 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:36,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:18:36,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 31 [2024-06-21 19:18:36,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:18:36,469 INFO L124 PetriNetUnfolderBase]: 298/634 cut-off events. [2024-06-21 19:18:36,469 INFO L125 PetriNetUnfolderBase]: For 33202/33205 co-relation queries the response was YES. [2024-06-21 19:18:36,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3771 conditions, 634 events. 298/634 cut-off events. For 33202/33205 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3507 event pairs, 19 based on Foata normal form. 4/631 useless extension candidates. Maximal degree in co-relation 3680. Up to 369 conditions per place. [2024-06-21 19:18:36,472 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 93 selfloop transitions, 23 changer transitions 0/173 dead transitions. [2024-06-21 19:18:36,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 173 transitions, 1876 flow [2024-06-21 19:18:36,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:18:36,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:18:36,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 118 transitions. [2024-06-21 19:18:36,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47580645161290325 [2024-06-21 19:18:36,476 INFO L175 Difference]: Start difference. First operand has 191 places, 160 transitions, 1612 flow. Second operand 8 states and 118 transitions. [2024-06-21 19:18:36,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 173 transitions, 1876 flow [2024-06-21 19:18:36,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 173 transitions, 1807 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-21 19:18:36,555 INFO L231 Difference]: Finished difference. Result has 193 places, 160 transitions, 1598 flow [2024-06-21 19:18:36,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1543, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1598, PETRI_PLACES=193, PETRI_TRANSITIONS=160} [2024-06-21 19:18:36,555 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 163 predicate places. [2024-06-21 19:18:36,556 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 160 transitions, 1598 flow [2024-06-21 19:18:36,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:36,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:18:36,556 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:18:36,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-21 19:18:36,556 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:18:36,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:18:36,557 INFO L85 PathProgramCache]: Analyzing trace with hash -125108499, now seen corresponding path program 1 times [2024-06-21 19:18:36,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:18:36,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700012276] [2024-06-21 19:18:36,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:18:36,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:18:36,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:18:38,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:18:38,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:18:38,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700012276] [2024-06-21 19:18:38,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700012276] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:18:38,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:18:38,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:18:38,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283289469] [2024-06-21 19:18:38,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:18:38,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:18:38,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:18:38,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:18:38,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:18:39,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-21 19:18:39,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 160 transitions, 1598 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:39,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:18:39,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-21 19:18:39,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:18:39,439 INFO L124 PetriNetUnfolderBase]: 337/680 cut-off events. [2024-06-21 19:18:39,439 INFO L125 PetriNetUnfolderBase]: For 33541/33541 co-relation queries the response was YES. [2024-06-21 19:18:39,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4067 conditions, 680 events. 337/680 cut-off events. For 33541/33541 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 3624 event pairs, 39 based on Foata normal form. 2/679 useless extension candidates. Maximal degree in co-relation 3975. Up to 563 conditions per place. [2024-06-21 19:18:39,444 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 138 selfloop transitions, 29 changer transitions 0/171 dead transitions. [2024-06-21 19:18:39,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 171 transitions, 1968 flow [2024-06-21 19:18:39,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:18:39,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:18:39,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-21 19:18:39,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4161290322580645 [2024-06-21 19:18:39,445 INFO L175 Difference]: Start difference. First operand has 193 places, 160 transitions, 1598 flow. Second operand 10 states and 129 transitions. [2024-06-21 19:18:39,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 171 transitions, 1968 flow [2024-06-21 19:18:39,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 171 transitions, 1879 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-21 19:18:39,519 INFO L231 Difference]: Finished difference. Result has 196 places, 161 transitions, 1585 flow [2024-06-21 19:18:39,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1509, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1585, PETRI_PLACES=196, PETRI_TRANSITIONS=161} [2024-06-21 19:18:39,519 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 166 predicate places. [2024-06-21 19:18:39,519 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 161 transitions, 1585 flow [2024-06-21 19:18:39,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:39,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:18:39,520 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:18:39,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-21 19:18:39,520 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:18:39,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:18:39,520 INFO L85 PathProgramCache]: Analyzing trace with hash -324410289, now seen corresponding path program 2 times [2024-06-21 19:18:39,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:18:39,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178164905] [2024-06-21 19:18:39,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:18:39,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:18:39,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:18:41,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:18:41,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:18:41,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178164905] [2024-06-21 19:18:41,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178164905] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:18:41,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:18:41,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:18:41,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300604799] [2024-06-21 19:18:41,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:18:41,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:18:41,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:18:41,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:18:41,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:18:41,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-21 19:18:41,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 161 transitions, 1585 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:41,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:18:41,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-21 19:18:41,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:18:41,534 INFO L124 PetriNetUnfolderBase]: 341/688 cut-off events. [2024-06-21 19:18:41,534 INFO L125 PetriNetUnfolderBase]: For 32040/32040 co-relation queries the response was YES. [2024-06-21 19:18:41,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4034 conditions, 688 events. 341/688 cut-off events. For 32040/32040 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 3710 event pairs, 41 based on Foata normal form. 2/687 useless extension candidates. Maximal degree in co-relation 3943. Up to 580 conditions per place. [2024-06-21 19:18:41,540 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 143 selfloop transitions, 25 changer transitions 0/172 dead transitions. [2024-06-21 19:18:41,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 172 transitions, 1959 flow [2024-06-21 19:18:41,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:18:41,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:18:41,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-21 19:18:41,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4129032258064516 [2024-06-21 19:18:41,541 INFO L175 Difference]: Start difference. First operand has 196 places, 161 transitions, 1585 flow. Second operand 10 states and 128 transitions. [2024-06-21 19:18:41,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 172 transitions, 1959 flow [2024-06-21 19:18:41,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 172 transitions, 1893 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-21 19:18:41,631 INFO L231 Difference]: Finished difference. Result has 198 places, 162 transitions, 1589 flow [2024-06-21 19:18:41,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1519, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1589, PETRI_PLACES=198, PETRI_TRANSITIONS=162} [2024-06-21 19:18:41,631 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 168 predicate places. [2024-06-21 19:18:41,631 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 162 transitions, 1589 flow [2024-06-21 19:18:41,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:41,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:18:41,631 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:18:41,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-21 19:18:41,632 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:18:41,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:18:41,632 INFO L85 PathProgramCache]: Analyzing trace with hash -324558159, now seen corresponding path program 3 times [2024-06-21 19:18:41,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:18:41,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215671380] [2024-06-21 19:18:41,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:18:41,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:18:41,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:18:43,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:18:43,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:18:43,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215671380] [2024-06-21 19:18:43,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215671380] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:18:43,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:18:43,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:18:43,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523658178] [2024-06-21 19:18:43,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:18:43,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:18:43,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:18:43,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:18:43,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:18:43,280 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-21 19:18:43,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 162 transitions, 1589 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:43,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:18:43,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-21 19:18:43,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:18:43,644 INFO L124 PetriNetUnfolderBase]: 345/696 cut-off events. [2024-06-21 19:18:43,644 INFO L125 PetriNetUnfolderBase]: For 33148/33148 co-relation queries the response was YES. [2024-06-21 19:18:43,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4077 conditions, 696 events. 345/696 cut-off events. For 33148/33148 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 3760 event pairs, 39 based on Foata normal form. 2/695 useless extension candidates. Maximal degree in co-relation 3985. Up to 583 conditions per place. [2024-06-21 19:18:43,649 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 146 selfloop transitions, 24 changer transitions 0/174 dead transitions. [2024-06-21 19:18:43,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 174 transitions, 1971 flow [2024-06-21 19:18:43,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:18:43,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:18:43,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-21 19:18:43,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4129032258064516 [2024-06-21 19:18:43,650 INFO L175 Difference]: Start difference. First operand has 198 places, 162 transitions, 1589 flow. Second operand 10 states and 128 transitions. [2024-06-21 19:18:43,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 174 transitions, 1971 flow [2024-06-21 19:18:43,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 174 transitions, 1911 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-21 19:18:43,725 INFO L231 Difference]: Finished difference. Result has 200 places, 163 transitions, 1599 flow [2024-06-21 19:18:43,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1529, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1599, PETRI_PLACES=200, PETRI_TRANSITIONS=163} [2024-06-21 19:18:43,726 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 170 predicate places. [2024-06-21 19:18:43,726 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 163 transitions, 1599 flow [2024-06-21 19:18:43,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:43,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:18:43,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:18:43,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-21 19:18:43,726 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:18:43,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:18:43,727 INFO L85 PathProgramCache]: Analyzing trace with hash -443315121, now seen corresponding path program 4 times [2024-06-21 19:18:43,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:18:43,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413551392] [2024-06-21 19:18:43,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:18:43,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:18:43,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:18:45,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:18:45,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:18:45,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413551392] [2024-06-21 19:18:45,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413551392] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:18:45,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:18:45,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:18:45,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832042375] [2024-06-21 19:18:45,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:18:45,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:18:45,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:18:45,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:18:45,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:18:45,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-21 19:18:45,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 163 transitions, 1599 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:45,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:18:45,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-21 19:18:45,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:18:45,669 INFO L124 PetriNetUnfolderBase]: 349/704 cut-off events. [2024-06-21 19:18:45,669 INFO L125 PetriNetUnfolderBase]: For 34302/34302 co-relation queries the response was YES. [2024-06-21 19:18:45,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4130 conditions, 704 events. 349/704 cut-off events. For 34302/34302 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 3811 event pairs, 43 based on Foata normal form. 2/703 useless extension candidates. Maximal degree in co-relation 4037. Up to 602 conditions per place. [2024-06-21 19:18:45,674 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 150 selfloop transitions, 22 changer transitions 0/176 dead transitions. [2024-06-21 19:18:45,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 176 transitions, 1999 flow [2024-06-21 19:18:45,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:18:45,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:18:45,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-21 19:18:45,675 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4096774193548387 [2024-06-21 19:18:45,675 INFO L175 Difference]: Start difference. First operand has 200 places, 163 transitions, 1599 flow. Second operand 10 states and 127 transitions. [2024-06-21 19:18:45,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 176 transitions, 1999 flow [2024-06-21 19:18:45,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 176 transitions, 1939 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-21 19:18:45,752 INFO L231 Difference]: Finished difference. Result has 203 places, 165 transitions, 1622 flow [2024-06-21 19:18:45,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1539, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1622, PETRI_PLACES=203, PETRI_TRANSITIONS=165} [2024-06-21 19:18:45,753 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 173 predicate places. [2024-06-21 19:18:45,753 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 165 transitions, 1622 flow [2024-06-21 19:18:45,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:45,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:18:45,753 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:18:45,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-21 19:18:45,754 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:18:45,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:18:45,754 INFO L85 PathProgramCache]: Analyzing trace with hash -443462991, now seen corresponding path program 5 times [2024-06-21 19:18:45,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:18:45,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047058331] [2024-06-21 19:18:45,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:18:45,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:18:45,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:18:47,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:18:47,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:18:47,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047058331] [2024-06-21 19:18:47,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047058331] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:18:47,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:18:47,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:18:47,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133102187] [2024-06-21 19:18:47,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:18:47,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:18:47,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:18:47,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:18:47,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:18:47,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-21 19:18:47,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 165 transitions, 1622 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:47,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:18:47,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-21 19:18:47,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:18:47,449 INFO L124 PetriNetUnfolderBase]: 353/712 cut-off events. [2024-06-21 19:18:47,449 INFO L125 PetriNetUnfolderBase]: For 35440/35440 co-relation queries the response was YES. [2024-06-21 19:18:47,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4187 conditions, 712 events. 353/712 cut-off events. For 35440/35440 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 3863 event pairs, 43 based on Foata normal form. 2/711 useless extension candidates. Maximal degree in co-relation 4092. Up to 605 conditions per place. [2024-06-21 19:18:47,455 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 153 selfloop transitions, 21 changer transitions 0/178 dead transitions. [2024-06-21 19:18:47,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 178 transitions, 2020 flow [2024-06-21 19:18:47,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:18:47,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:18:47,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-21 19:18:47,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4096774193548387 [2024-06-21 19:18:47,456 INFO L175 Difference]: Start difference. First operand has 203 places, 165 transitions, 1622 flow. Second operand 10 states and 127 transitions. [2024-06-21 19:18:47,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 178 transitions, 2020 flow [2024-06-21 19:18:47,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 178 transitions, 1965 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-21 19:18:47,547 INFO L231 Difference]: Finished difference. Result has 206 places, 166 transitions, 1635 flow [2024-06-21 19:18:47,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1567, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1635, PETRI_PLACES=206, PETRI_TRANSITIONS=166} [2024-06-21 19:18:47,547 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 176 predicate places. [2024-06-21 19:18:47,548 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 166 transitions, 1635 flow [2024-06-21 19:18:47,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:47,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:18:47,548 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:18:47,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-21 19:18:47,548 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:18:47,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:18:47,548 INFO L85 PathProgramCache]: Analyzing trace with hash -532028751, now seen corresponding path program 6 times [2024-06-21 19:18:47,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:18:47,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333611996] [2024-06-21 19:18:47,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:18:47,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:18:47,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:18:48,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:18:48,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:18:48,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333611996] [2024-06-21 19:18:48,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333611996] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:18:48,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:18:48,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:18:48,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729940665] [2024-06-21 19:18:48,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:18:48,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:18:48,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:18:48,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:18:48,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:18:48,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-21 19:18:48,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 166 transitions, 1635 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:48,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:18:48,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-21 19:18:48,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:18:49,276 INFO L124 PetriNetUnfolderBase]: 357/720 cut-off events. [2024-06-21 19:18:49,277 INFO L125 PetriNetUnfolderBase]: For 36716/36716 co-relation queries the response was YES. [2024-06-21 19:18:49,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4242 conditions, 720 events. 357/720 cut-off events. For 36716/36716 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 3919 event pairs, 41 based on Foata normal form. 2/719 useless extension candidates. Maximal degree in co-relation 4146. Up to 604 conditions per place. [2024-06-21 19:18:49,282 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 157 selfloop transitions, 20 changer transitions 0/181 dead transitions. [2024-06-21 19:18:49,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 181 transitions, 2047 flow [2024-06-21 19:18:49,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:18:49,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:18:49,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-21 19:18:49,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4129032258064516 [2024-06-21 19:18:49,283 INFO L175 Difference]: Start difference. First operand has 206 places, 166 transitions, 1635 flow. Second operand 10 states and 128 transitions. [2024-06-21 19:18:49,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 181 transitions, 2047 flow [2024-06-21 19:18:49,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 181 transitions, 1989 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-21 19:18:49,369 INFO L231 Difference]: Finished difference. Result has 208 places, 167 transitions, 1645 flow [2024-06-21 19:18:49,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1577, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1645, PETRI_PLACES=208, PETRI_TRANSITIONS=167} [2024-06-21 19:18:49,369 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 178 predicate places. [2024-06-21 19:18:49,369 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 167 transitions, 1645 flow [2024-06-21 19:18:49,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:49,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:18:49,369 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:18:49,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-21 19:18:49,370 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:18:49,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:18:49,370 INFO L85 PathProgramCache]: Analyzing trace with hash -2017703507, now seen corresponding path program 1 times [2024-06-21 19:18:49,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:18:49,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086694622] [2024-06-21 19:18:49,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:18:49,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:18:49,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:18:51,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:18:51,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:18:51,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086694622] [2024-06-21 19:18:51,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086694622] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:18:51,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:18:51,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:18:51,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728851053] [2024-06-21 19:18:51,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:18:51,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:18:51,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:18:51,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:18:51,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:18:51,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-21 19:18:51,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 167 transitions, 1645 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:51,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:18:51,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-21 19:18:51,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:18:52,345 INFO L124 PetriNetUnfolderBase]: 360/726 cut-off events. [2024-06-21 19:18:52,345 INFO L125 PetriNetUnfolderBase]: For 35870/35870 co-relation queries the response was YES. [2024-06-21 19:18:52,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4280 conditions, 726 events. 360/726 cut-off events. For 35870/35870 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 3947 event pairs, 41 based on Foata normal form. 1/726 useless extension candidates. Maximal degree in co-relation 4183. Up to 600 conditions per place. [2024-06-21 19:18:52,352 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 140 selfloop transitions, 36 changer transitions 0/180 dead transitions. [2024-06-21 19:18:52,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 180 transitions, 2061 flow [2024-06-21 19:18:52,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:18:52,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:18:52,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 138 transitions. [2024-06-21 19:18:52,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44516129032258067 [2024-06-21 19:18:52,353 INFO L175 Difference]: Start difference. First operand has 208 places, 167 transitions, 1645 flow. Second operand 10 states and 138 transitions. [2024-06-21 19:18:52,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 180 transitions, 2061 flow [2024-06-21 19:18:52,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 180 transitions, 2003 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-21 19:18:52,458 INFO L231 Difference]: Finished difference. Result has 210 places, 169 transitions, 1706 flow [2024-06-21 19:18:52,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1587, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1706, PETRI_PLACES=210, PETRI_TRANSITIONS=169} [2024-06-21 19:18:52,458 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 180 predicate places. [2024-06-21 19:18:52,458 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 169 transitions, 1706 flow [2024-06-21 19:18:52,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:52,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:18:52,459 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:18:52,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-21 19:18:52,459 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:18:52,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:18:52,459 INFO L85 PathProgramCache]: Analyzing trace with hash -125102547, now seen corresponding path program 2 times [2024-06-21 19:18:52,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:18:52,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447061149] [2024-06-21 19:18:52,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:18:52,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:18:52,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:18:54,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:18:54,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:18:54,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447061149] [2024-06-21 19:18:54,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447061149] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:18:54,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:18:54,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:18:54,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601944371] [2024-06-21 19:18:54,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:18:54,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:18:54,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:18:54,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:18:54,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:18:55,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-21 19:18:55,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 169 transitions, 1706 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:55,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:18:55,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-21 19:18:55,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:18:55,669 INFO L124 PetriNetUnfolderBase]: 363/731 cut-off events. [2024-06-21 19:18:55,670 INFO L125 PetriNetUnfolderBase]: For 36471/36471 co-relation queries the response was YES. [2024-06-21 19:18:55,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4345 conditions, 731 events. 363/731 cut-off events. For 36471/36471 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 3967 event pairs, 47 based on Foata normal form. 1/731 useless extension candidates. Maximal degree in co-relation 4247. Up to 567 conditions per place. [2024-06-21 19:18:55,675 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 131 selfloop transitions, 47 changer transitions 0/182 dead transitions. [2024-06-21 19:18:55,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 182 transitions, 2130 flow [2024-06-21 19:18:55,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:18:55,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:18:55,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 141 transitions. [2024-06-21 19:18:55,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45483870967741935 [2024-06-21 19:18:55,676 INFO L175 Difference]: Start difference. First operand has 210 places, 169 transitions, 1706 flow. Second operand 10 states and 141 transitions. [2024-06-21 19:18:55,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 182 transitions, 2130 flow [2024-06-21 19:18:55,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 182 transitions, 2017 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-21 19:18:55,776 INFO L231 Difference]: Finished difference. Result has 211 places, 171 transitions, 1738 flow [2024-06-21 19:18:55,776 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1593, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1738, PETRI_PLACES=211, PETRI_TRANSITIONS=171} [2024-06-21 19:18:55,777 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 181 predicate places. [2024-06-21 19:18:55,777 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 171 transitions, 1738 flow [2024-06-21 19:18:55,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:55,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:18:55,777 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:18:55,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-21 19:18:55,777 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:18:55,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:18:55,777 INFO L85 PathProgramCache]: Analyzing trace with hash -117750897, now seen corresponding path program 3 times [2024-06-21 19:18:55,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:18:55,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095697191] [2024-06-21 19:18:55,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:18:55,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:18:55,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:18:58,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:18:58,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:18:58,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095697191] [2024-06-21 19:18:58,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095697191] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:18:58,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:18:58,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:18:58,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335005575] [2024-06-21 19:18:58,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:18:58,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:18:58,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:18:58,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:18:58,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:18:59,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-21 19:18:59,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 171 transitions, 1738 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:59,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:18:59,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-21 19:18:59,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:18:59,785 INFO L124 PetriNetUnfolderBase]: 361/728 cut-off events. [2024-06-21 19:18:59,786 INFO L125 PetriNetUnfolderBase]: For 35703/35703 co-relation queries the response was YES. [2024-06-21 19:18:59,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4257 conditions, 728 events. 361/728 cut-off events. For 35703/35703 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 3969 event pairs, 47 based on Foata normal form. 1/728 useless extension candidates. Maximal degree in co-relation 4159. Up to 549 conditions per place. [2024-06-21 19:18:59,791 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 123 selfloop transitions, 55 changer transitions 0/182 dead transitions. [2024-06-21 19:18:59,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 182 transitions, 2120 flow [2024-06-21 19:18:59,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:18:59,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:18:59,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 142 transitions. [2024-06-21 19:18:59,792 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45806451612903226 [2024-06-21 19:18:59,792 INFO L175 Difference]: Start difference. First operand has 211 places, 171 transitions, 1738 flow. Second operand 10 states and 142 transitions. [2024-06-21 19:18:59,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 182 transitions, 2120 flow [2024-06-21 19:18:59,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 182 transitions, 1986 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-06-21 19:18:59,886 INFO L231 Difference]: Finished difference. Result has 214 places, 171 transitions, 1719 flow [2024-06-21 19:18:59,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1604, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1719, PETRI_PLACES=214, PETRI_TRANSITIONS=171} [2024-06-21 19:18:59,887 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 184 predicate places. [2024-06-21 19:18:59,887 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 171 transitions, 1719 flow [2024-06-21 19:18:59,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:59,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:18:59,887 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:18:59,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-21 19:18:59,888 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:18:59,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:18:59,888 INFO L85 PathProgramCache]: Analyzing trace with hash -816457077, now seen corresponding path program 7 times [2024-06-21 19:18:59,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:18:59,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065417700] [2024-06-21 19:18:59,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:18:59,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:18:59,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:19:02,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:19:02,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:19:02,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065417700] [2024-06-21 19:19:02,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065417700] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:19:02,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:19:02,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:19:02,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605792438] [2024-06-21 19:19:02,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:19:02,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:19:02,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:19:02,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:19:02,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:19:02,100 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-21 19:19:02,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 171 transitions, 1719 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:19:02,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:19:02,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-21 19:19:02,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:19:02,464 INFO L124 PetriNetUnfolderBase]: 365/733 cut-off events. [2024-06-21 19:19:02,464 INFO L125 PetriNetUnfolderBase]: For 39076/39076 co-relation queries the response was YES. [2024-06-21 19:19:02,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4308 conditions, 733 events. 365/733 cut-off events. For 39076/39076 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4028 event pairs, 53 based on Foata normal form. 2/730 useless extension candidates. Maximal degree in co-relation 4209. Up to 565 conditions per place. [2024-06-21 19:19:02,470 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 121 selfloop transitions, 56 changer transitions 0/181 dead transitions. [2024-06-21 19:19:02,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 181 transitions, 2117 flow [2024-06-21 19:19:02,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:19:02,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:19:02,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 121 transitions. [2024-06-21 19:19:02,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4336917562724014 [2024-06-21 19:19:02,471 INFO L175 Difference]: Start difference. First operand has 214 places, 171 transitions, 1719 flow. Second operand 9 states and 121 transitions. [2024-06-21 19:19:02,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 181 transitions, 2117 flow [2024-06-21 19:19:02,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 181 transitions, 1926 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-21 19:19:02,574 INFO L231 Difference]: Finished difference. Result has 212 places, 172 transitions, 1670 flow [2024-06-21 19:19:02,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1528, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1670, PETRI_PLACES=212, PETRI_TRANSITIONS=172} [2024-06-21 19:19:02,575 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 182 predicate places. [2024-06-21 19:19:02,575 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 172 transitions, 1670 flow [2024-06-21 19:19:02,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:19:02,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:19:02,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:19:02,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-21 19:19:02,575 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:19:02,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:19:02,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1740318475, now seen corresponding path program 8 times [2024-06-21 19:19:02,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:19:02,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674501596] [2024-06-21 19:19:02,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:19:02,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:19:02,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:19:04,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:19:04,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:19:04,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674501596] [2024-06-21 19:19:04,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674501596] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:19:04,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:19:04,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:19:04,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143898767] [2024-06-21 19:19:04,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:19:04,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:19:04,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:19:04,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:19:04,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:19:04,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-21 19:19:04,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 172 transitions, 1670 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:19:04,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:19:04,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-21 19:19:04,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:19:04,958 INFO L124 PetriNetUnfolderBase]: 369/741 cut-off events. [2024-06-21 19:19:04,958 INFO L125 PetriNetUnfolderBase]: For 40469/40469 co-relation queries the response was YES. [2024-06-21 19:19:04,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4298 conditions, 741 events. 369/741 cut-off events. For 40469/40469 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4071 event pairs, 53 based on Foata normal form. 2/738 useless extension candidates. Maximal degree in co-relation 4199. Up to 608 conditions per place. [2024-06-21 19:19:04,963 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 139 selfloop transitions, 39 changer transitions 0/182 dead transitions. [2024-06-21 19:19:04,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 182 transitions, 2072 flow [2024-06-21 19:19:04,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:19:04,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:19:04,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-21 19:19:04,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4161290322580645 [2024-06-21 19:19:04,964 INFO L175 Difference]: Start difference. First operand has 212 places, 172 transitions, 1670 flow. Second operand 10 states and 129 transitions. [2024-06-21 19:19:04,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 182 transitions, 2072 flow [2024-06-21 19:19:05,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 182 transitions, 1908 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-21 19:19:05,058 INFO L231 Difference]: Finished difference. Result has 214 places, 173 transitions, 1616 flow [2024-06-21 19:19:05,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1506, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1616, PETRI_PLACES=214, PETRI_TRANSITIONS=173} [2024-06-21 19:19:05,058 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 184 predicate places. [2024-06-21 19:19:05,059 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 173 transitions, 1616 flow [2024-06-21 19:19:05,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:19:05,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:19:05,059 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:19:05,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-21 19:19:05,059 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:19:05,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:19:05,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1595354191, now seen corresponding path program 9 times [2024-06-21 19:19:05,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:19:05,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331814504] [2024-06-21 19:19:05,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:19:05,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:19:05,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:19:06,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:19:06,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:19:06,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331814504] [2024-06-21 19:19:06,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331814504] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:19:06,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:19:06,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:19:06,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883084556] [2024-06-21 19:19:06,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:19:06,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:19:06,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:19:06,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:19:06,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:19:07,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-21 19:19:07,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 173 transitions, 1616 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:19:07,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:19:07,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-21 19:19:07,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:19:07,466 INFO L124 PetriNetUnfolderBase]: 373/749 cut-off events. [2024-06-21 19:19:07,466 INFO L125 PetriNetUnfolderBase]: For 41551/41551 co-relation queries the response was YES. [2024-06-21 19:19:07,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4268 conditions, 749 events. 373/749 cut-off events. For 41551/41551 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4131 event pairs, 55 based on Foata normal form. 2/746 useless extension candidates. Maximal degree in co-relation 4169. Up to 622 conditions per place. [2024-06-21 19:19:07,472 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 143 selfloop transitions, 36 changer transitions 0/183 dead transitions. [2024-06-21 19:19:07,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 183 transitions, 2022 flow [2024-06-21 19:19:07,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:19:07,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:19:07,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-21 19:19:07,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4096774193548387 [2024-06-21 19:19:07,473 INFO L175 Difference]: Start difference. First operand has 214 places, 173 transitions, 1616 flow. Second operand 10 states and 127 transitions. [2024-06-21 19:19:07,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 183 transitions, 2022 flow [2024-06-21 19:19:07,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 183 transitions, 1922 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-21 19:19:07,589 INFO L231 Difference]: Finished difference. Result has 216 places, 174 transitions, 1622 flow [2024-06-21 19:19:07,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1516, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1622, PETRI_PLACES=216, PETRI_TRANSITIONS=174} [2024-06-21 19:19:07,589 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 186 predicate places. [2024-06-21 19:19:07,589 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 174 transitions, 1622 flow [2024-06-21 19:19:07,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:19:07,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:19:07,590 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:19:07,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-21 19:19:07,590 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:19:07,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:19:07,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1595206321, now seen corresponding path program 10 times [2024-06-21 19:19:07,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:19:07,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212728593] [2024-06-21 19:19:07,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:19:07,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:19:07,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:19:09,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:19:09,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:19:09,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212728593] [2024-06-21 19:19:09,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212728593] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:19:09,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:19:09,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:19:09,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978913608] [2024-06-21 19:19:09,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:19:09,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:19:09,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:19:09,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:19:09,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:19:09,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-21 19:19:09,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 174 transitions, 1622 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:19:09,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:19:09,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-21 19:19:09,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:19:09,556 INFO L124 PetriNetUnfolderBase]: 377/757 cut-off events. [2024-06-21 19:19:09,556 INFO L125 PetriNetUnfolderBase]: For 42766/42766 co-relation queries the response was YES. [2024-06-21 19:19:09,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4314 conditions, 757 events. 377/757 cut-off events. For 42766/42766 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4180 event pairs, 55 based on Foata normal form. 2/754 useless extension candidates. Maximal degree in co-relation 4214. Up to 625 conditions per place. [2024-06-21 19:19:09,561 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 146 selfloop transitions, 35 changer transitions 0/185 dead transitions. [2024-06-21 19:19:09,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 185 transitions, 2036 flow [2024-06-21 19:19:09,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:19:09,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:19:09,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-21 19:19:09,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4096774193548387 [2024-06-21 19:19:09,562 INFO L175 Difference]: Start difference. First operand has 216 places, 174 transitions, 1622 flow. Second operand 10 states and 127 transitions. [2024-06-21 19:19:09,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 185 transitions, 2036 flow [2024-06-21 19:19:09,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 185 transitions, 1940 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-21 19:19:09,662 INFO L231 Difference]: Finished difference. Result has 218 places, 175 transitions, 1632 flow [2024-06-21 19:19:09,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1526, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1632, PETRI_PLACES=218, PETRI_TRANSITIONS=175} [2024-06-21 19:19:09,662 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 188 predicate places. [2024-06-21 19:19:09,662 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 175 transitions, 1632 flow [2024-06-21 19:19:09,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:19:09,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:19:09,662 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:19:09,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-21 19:19:09,663 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:19:09,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:19:09,663 INFO L85 PathProgramCache]: Analyzing trace with hash -396950693, now seen corresponding path program 4 times [2024-06-21 19:19:09,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:19:09,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636781524] [2024-06-21 19:19:09,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:19:09,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:19:09,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:19:11,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:19:11,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:19:11,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636781524] [2024-06-21 19:19:11,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636781524] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:19:11,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:19:11,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:19:11,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983159964] [2024-06-21 19:19:11,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:19:11,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:19:11,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:19:11,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:19:11,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:19:11,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-21 19:19:11,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 175 transitions, 1632 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:19:11,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:19:11,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-21 19:19:11,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:19:12,400 INFO L124 PetriNetUnfolderBase]: 375/757 cut-off events. [2024-06-21 19:19:12,400 INFO L125 PetriNetUnfolderBase]: For 38828/38828 co-relation queries the response was YES. [2024-06-21 19:19:12,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4202 conditions, 757 events. 375/757 cut-off events. For 38828/38828 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4189 event pairs, 75 based on Foata normal form. 1/757 useless extension candidates. Maximal degree in co-relation 4101. Up to 661 conditions per place. [2024-06-21 19:19:12,405 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 156 selfloop transitions, 24 changer transitions 0/184 dead transitions. [2024-06-21 19:19:12,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 184 transitions, 2012 flow [2024-06-21 19:19:12,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:19:12,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:19:12,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-21 19:19:12,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39589442815249265 [2024-06-21 19:19:12,406 INFO L175 Difference]: Start difference. First operand has 218 places, 175 transitions, 1632 flow. Second operand 11 states and 135 transitions. [2024-06-21 19:19:12,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 184 transitions, 2012 flow [2024-06-21 19:19:12,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 184 transitions, 1896 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-21 19:19:12,509 INFO L231 Difference]: Finished difference. Result has 221 places, 175 transitions, 1569 flow [2024-06-21 19:19:12,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1516, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1569, PETRI_PLACES=221, PETRI_TRANSITIONS=175} [2024-06-21 19:19:12,510 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 191 predicate places. [2024-06-21 19:19:12,510 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 175 transitions, 1569 flow [2024-06-21 19:19:12,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:19:12,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:19:12,510 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:19:12,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-21 19:19:12,510 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:19:12,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:19:12,511 INFO L85 PathProgramCache]: Analyzing trace with hash 52478619, now seen corresponding path program 5 times [2024-06-21 19:19:12,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:19:12,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510452720] [2024-06-21 19:19:12,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:19:12,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:19:12,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:19:14,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:19:14,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:19:14,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510452720] [2024-06-21 19:19:14,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510452720] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:19:14,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:19:14,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:19:14,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183858273] [2024-06-21 19:19:14,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:19:14,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:19:14,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:19:14,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:19:14,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:19:14,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-21 19:19:14,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 175 transitions, 1569 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:19:14,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:19:14,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-21 19:19:14,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:19:15,030 INFO L124 PetriNetUnfolderBase]: 378/759 cut-off events. [2024-06-21 19:19:15,031 INFO L125 PetriNetUnfolderBase]: For 39334/39334 co-relation queries the response was YES. [2024-06-21 19:19:15,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4160 conditions, 759 events. 378/759 cut-off events. For 39334/39334 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 4210 event pairs, 55 based on Foata normal form. 1/756 useless extension candidates. Maximal degree in co-relation 4058. Up to 605 conditions per place. [2024-06-21 19:19:15,036 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 136 selfloop transitions, 47 changer transitions 0/187 dead transitions. [2024-06-21 19:19:15,036 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 187 transitions, 2137 flow [2024-06-21 19:19:15,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:19:15,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:19:15,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 143 transitions. [2024-06-21 19:19:15,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4612903225806452 [2024-06-21 19:19:15,041 INFO L175 Difference]: Start difference. First operand has 221 places, 175 transitions, 1569 flow. Second operand 10 states and 143 transitions. [2024-06-21 19:19:15,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 187 transitions, 2137 flow [2024-06-21 19:19:15,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 187 transitions, 2078 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-21 19:19:15,147 INFO L231 Difference]: Finished difference. Result has 221 places, 177 transitions, 1645 flow [2024-06-21 19:19:15,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1510, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1645, PETRI_PLACES=221, PETRI_TRANSITIONS=177} [2024-06-21 19:19:15,147 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 191 predicate places. [2024-06-21 19:19:15,147 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 177 transitions, 1645 flow [2024-06-21 19:19:15,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:19:15,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:19:15,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:19:15,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-21 19:19:15,148 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:19:15,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:19:15,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1957460045, now seen corresponding path program 6 times [2024-06-21 19:19:15,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:19:15,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329182237] [2024-06-21 19:19:15,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:19:15,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:19:15,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:19:17,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:19:17,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:19:17,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329182237] [2024-06-21 19:19:17,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329182237] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:19:17,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:19:17,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:19:17,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667015377] [2024-06-21 19:19:17,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:19:17,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:19:17,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:19:17,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:19:17,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:19:17,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-21 19:19:17,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 177 transitions, 1645 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:19:17,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:19:17,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-21 19:19:17,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:19:18,406 INFO L124 PetriNetUnfolderBase]: 381/764 cut-off events. [2024-06-21 19:19:18,407 INFO L125 PetriNetUnfolderBase]: For 40751/40751 co-relation queries the response was YES. [2024-06-21 19:19:18,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4266 conditions, 764 events. 381/764 cut-off events. For 40751/40751 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 4249 event pairs, 55 based on Foata normal form. 1/760 useless extension candidates. Maximal degree in co-relation 4163. Up to 609 conditions per place. [2024-06-21 19:19:18,411 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 136 selfloop transitions, 49 changer transitions 0/189 dead transitions. [2024-06-21 19:19:18,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 189 transitions, 2223 flow [2024-06-21 19:19:18,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:19:18,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:19:18,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 144 transitions. [2024-06-21 19:19:18,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4645161290322581 [2024-06-21 19:19:18,412 INFO L175 Difference]: Start difference. First operand has 221 places, 177 transitions, 1645 flow. Second operand 10 states and 144 transitions. [2024-06-21 19:19:18,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 189 transitions, 2223 flow [2024-06-21 19:19:18,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 189 transitions, 2099 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-21 19:19:18,533 INFO L231 Difference]: Finished difference. Result has 223 places, 179 transitions, 1664 flow [2024-06-21 19:19:18,533 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1525, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1664, PETRI_PLACES=223, PETRI_TRANSITIONS=179} [2024-06-21 19:19:18,533 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 193 predicate places. [2024-06-21 19:19:18,533 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 179 transitions, 1664 flow [2024-06-21 19:19:18,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:19:18,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:19:18,534 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:19:18,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-21 19:19:18,534 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:19:18,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:19:18,534 INFO L85 PathProgramCache]: Analyzing trace with hash -816249315, now seen corresponding path program 7 times [2024-06-21 19:19:18,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:19:18,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664861885] [2024-06-21 19:19:18,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:19:18,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:19:18,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:19:21,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:19:21,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:19:21,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664861885] [2024-06-21 19:19:21,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664861885] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:19:21,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:19:21,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:19:21,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681326646] [2024-06-21 19:19:21,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:19:21,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:19:21,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:19:21,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:19:21,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:19:21,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-21 19:19:21,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 179 transitions, 1664 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:19:21,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:19:21,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-21 19:19:21,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:19:22,036 INFO L124 PetriNetUnfolderBase]: 384/769 cut-off events. [2024-06-21 19:19:22,036 INFO L125 PetriNetUnfolderBase]: For 41836/41836 co-relation queries the response was YES. [2024-06-21 19:19:22,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4299 conditions, 769 events. 384/769 cut-off events. For 41836/41836 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 4280 event pairs, 55 based on Foata normal form. 1/765 useless extension candidates. Maximal degree in co-relation 4195. Up to 523 conditions per place. [2024-06-21 19:19:22,042 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 112 selfloop transitions, 75 changer transitions 0/191 dead transitions. [2024-06-21 19:19:22,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 191 transitions, 2242 flow [2024-06-21 19:19:22,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:19:22,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:19:22,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 148 transitions. [2024-06-21 19:19:22,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4774193548387097 [2024-06-21 19:19:22,043 INFO L175 Difference]: Start difference. First operand has 223 places, 179 transitions, 1664 flow. Second operand 10 states and 148 transitions. [2024-06-21 19:19:22,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 191 transitions, 2242 flow [2024-06-21 19:19:22,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 191 transitions, 2118 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-21 19:19:22,193 INFO L231 Difference]: Finished difference. Result has 225 places, 181 transitions, 1729 flow [2024-06-21 19:19:22,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1540, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1729, PETRI_PLACES=225, PETRI_TRANSITIONS=181} [2024-06-21 19:19:22,193 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 195 predicate places. [2024-06-21 19:19:22,193 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 181 transitions, 1729 flow [2024-06-21 19:19:22,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:19:22,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:19:22,194 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:19:22,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-21 19:19:22,194 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:19:22,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:19:22,194 INFO L85 PathProgramCache]: Analyzing trace with hash -653653013, now seen corresponding path program 8 times [2024-06-21 19:19:22,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:19:22,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748613810] [2024-06-21 19:19:22,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:19:22,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:19:22,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:19:24,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:19:24,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:19:24,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748613810] [2024-06-21 19:19:24,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748613810] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:19:24,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:19:24,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:19:24,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181618163] [2024-06-21 19:19:24,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:19:24,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:19:24,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:19:24,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:19:24,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:19:24,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-21 19:19:24,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 181 transitions, 1729 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:19:24,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:19:24,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-21 19:19:24,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:19:25,339 INFO L124 PetriNetUnfolderBase]: 382/766 cut-off events. [2024-06-21 19:19:25,339 INFO L125 PetriNetUnfolderBase]: For 40136/40136 co-relation queries the response was YES. [2024-06-21 19:19:25,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4248 conditions, 766 events. 382/766 cut-off events. For 40136/40136 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 4252 event pairs, 55 based on Foata normal form. 1/762 useless extension candidates. Maximal degree in co-relation 4143. Up to 488 conditions per place. [2024-06-21 19:19:25,344 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 95 selfloop transitions, 92 changer transitions 0/191 dead transitions. [2024-06-21 19:19:25,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 191 transitions, 2275 flow [2024-06-21 19:19:25,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:19:25,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:19:25,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 147 transitions. [2024-06-21 19:19:25,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47419354838709676 [2024-06-21 19:19:25,345 INFO L175 Difference]: Start difference. First operand has 225 places, 181 transitions, 1729 flow. Second operand 10 states and 147 transitions. [2024-06-21 19:19:25,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 191 transitions, 2275 flow [2024-06-21 19:19:25,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 191 transitions, 2077 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-21 19:19:25,467 INFO L231 Difference]: Finished difference. Result has 227 places, 181 transitions, 1720 flow [2024-06-21 19:19:25,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1531, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1720, PETRI_PLACES=227, PETRI_TRANSITIONS=181} [2024-06-21 19:19:25,468 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 197 predicate places. [2024-06-21 19:19:25,468 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 181 transitions, 1720 flow [2024-06-21 19:19:25,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:19:25,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:19:25,468 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:19:25,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-21 19:19:25,468 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:19:25,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:19:25,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1595360143, now seen corresponding path program 9 times [2024-06-21 19:19:25,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:19:25,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314110981] [2024-06-21 19:19:25,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:19:25,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:19:25,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:19:27,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:19:27,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:19:27,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314110981] [2024-06-21 19:19:27,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314110981] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:19:27,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:19:27,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:19:27,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262139424] [2024-06-21 19:19:27,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:19:27,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:19:27,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:19:27,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:19:27,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:19:27,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-21 19:19:27,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 181 transitions, 1720 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:19:27,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:19:27,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-21 19:19:27,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:19:28,183 INFO L124 PetriNetUnfolderBase]: 380/763 cut-off events. [2024-06-21 19:19:28,183 INFO L125 PetriNetUnfolderBase]: For 38089/38089 co-relation queries the response was YES. [2024-06-21 19:19:28,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4155 conditions, 763 events. 380/763 cut-off events. For 38089/38089 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 4249 event pairs, 57 based on Foata normal form. 1/759 useless extension candidates. Maximal degree in co-relation 4049. Up to 636 conditions per place. [2024-06-21 19:19:28,189 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 151 selfloop transitions, 35 changer transitions 0/190 dead transitions. [2024-06-21 19:19:28,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 190 transitions, 2112 flow [2024-06-21 19:19:28,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:19:28,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:19:28,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 128 transitions. [2024-06-21 19:19:28,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45878136200716846 [2024-06-21 19:19:28,190 INFO L175 Difference]: Start difference. First operand has 227 places, 181 transitions, 1720 flow. Second operand 9 states and 128 transitions. [2024-06-21 19:19:28,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 190 transitions, 2112 flow [2024-06-21 19:19:28,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 190 transitions, 1897 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-21 19:19:28,312 INFO L231 Difference]: Finished difference. Result has 227 places, 181 transitions, 1580 flow [2024-06-21 19:19:28,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1505, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1580, PETRI_PLACES=227, PETRI_TRANSITIONS=181} [2024-06-21 19:19:28,313 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 197 predicate places. [2024-06-21 19:19:28,313 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 181 transitions, 1580 flow [2024-06-21 19:19:28,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:19:28,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:19:28,314 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:19:28,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-21 19:19:28,314 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:19:28,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:19:28,314 INFO L85 PathProgramCache]: Analyzing trace with hash -815880591, now seen corresponding path program 11 times [2024-06-21 19:19:28,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:19:28,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595510236] [2024-06-21 19:19:28,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:19:28,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:19:28,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:19:29,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:19:29,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:19:29,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595510236] [2024-06-21 19:19:29,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595510236] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:19:29,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:19:29,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:19:29,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183307812] [2024-06-21 19:19:29,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:19:29,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:19:29,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:19:29,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:19:29,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:19:29,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-21 19:19:29,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 181 transitions, 1580 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:19:29,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:19:29,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-21 19:19:29,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:19:30,051 INFO L124 PetriNetUnfolderBase]: 384/775 cut-off events. [2024-06-21 19:19:30,051 INFO L125 PetriNetUnfolderBase]: For 42173/42173 co-relation queries the response was YES. [2024-06-21 19:19:30,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4109 conditions, 775 events. 384/775 cut-off events. For 42173/42173 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 4308 event pairs, 45 based on Foata normal form. 2/776 useless extension candidates. Maximal degree in co-relation 4003. Up to 666 conditions per place. [2024-06-21 19:19:30,057 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 172 selfloop transitions, 21 changer transitions 0/197 dead transitions. [2024-06-21 19:19:30,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 197 transitions, 2036 flow [2024-06-21 19:19:30,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:19:30,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:19:30,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-21 19:19:30,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-21 19:19:30,058 INFO L175 Difference]: Start difference. First operand has 227 places, 181 transitions, 1580 flow. Second operand 10 states and 130 transitions. [2024-06-21 19:19:30,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 197 transitions, 2036 flow [2024-06-21 19:19:30,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 197 transitions, 1940 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-21 19:19:30,169 INFO L231 Difference]: Finished difference. Result has 228 places, 182 transitions, 1564 flow [2024-06-21 19:19:30,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1484, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1564, PETRI_PLACES=228, PETRI_TRANSITIONS=182} [2024-06-21 19:19:30,169 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 198 predicate places. [2024-06-21 19:19:30,169 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 182 transitions, 1564 flow [2024-06-21 19:19:30,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:19:30,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:19:30,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:19:30,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-21 19:19:30,169 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:19:30,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:19:30,170 INFO L85 PathProgramCache]: Analyzing trace with hash -2002126803, now seen corresponding path program 12 times [2024-06-21 19:19:30,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:19:30,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314410231] [2024-06-21 19:19:30,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:19:30,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:19:30,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:19:31,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:19:31,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:19:31,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314410231] [2024-06-21 19:19:31,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314410231] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:19:31,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:19:31,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:19:31,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124136207] [2024-06-21 19:19:31,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:19:31,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:19:31,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:19:31,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:19:31,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:19:31,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-21 19:19:31,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 182 transitions, 1564 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:19:31,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:19:31,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-21 19:19:31,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:19:31,844 INFO L124 PetriNetUnfolderBase]: 391/788 cut-off events. [2024-06-21 19:19:31,844 INFO L125 PetriNetUnfolderBase]: For 43726/43726 co-relation queries the response was YES. [2024-06-21 19:19:31,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4199 conditions, 788 events. 391/788 cut-off events. For 43726/43726 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 4405 event pairs, 49 based on Foata normal form. 2/789 useless extension candidates. Maximal degree in co-relation 4091. Up to 684 conditions per place. [2024-06-21 19:19:31,850 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 173 selfloop transitions, 22 changer transitions 0/199 dead transitions. [2024-06-21 19:19:31,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 199 transitions, 2040 flow [2024-06-21 19:19:31,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:19:31,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:19:31,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-21 19:19:31,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-21 19:19:31,851 INFO L175 Difference]: Start difference. First operand has 228 places, 182 transitions, 1564 flow. Second operand 10 states and 130 transitions. [2024-06-21 19:19:31,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 199 transitions, 2040 flow [2024-06-21 19:19:31,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 199 transitions, 1970 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-21 19:19:31,983 INFO L231 Difference]: Finished difference. Result has 231 places, 185 transitions, 1601 flow [2024-06-21 19:19:31,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1494, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1601, PETRI_PLACES=231, PETRI_TRANSITIONS=185} [2024-06-21 19:19:31,984 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 201 predicate places. [2024-06-21 19:19:31,984 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 185 transitions, 1601 flow [2024-06-21 19:19:31,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:19:31,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:19:31,984 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:19:31,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-21 19:19:31,984 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:19:31,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:19:31,984 INFO L85 PathProgramCache]: Analyzing trace with hash -2005936083, now seen corresponding path program 13 times [2024-06-21 19:19:31,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:19:31,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730760516] [2024-06-21 19:19:31,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:19:31,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:19:32,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:19:33,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:19:33,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:19:33,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730760516] [2024-06-21 19:19:33,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730760516] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:19:33,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:19:33,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:19:33,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284628813] [2024-06-21 19:19:33,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:19:33,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:19:33,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:19:33,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:19:33,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:19:33,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-21 19:19:33,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 185 transitions, 1601 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:19:33,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:19:33,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-21 19:19:33,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:19:33,567 INFO L124 PetriNetUnfolderBase]: 395/796 cut-off events. [2024-06-21 19:19:33,567 INFO L125 PetriNetUnfolderBase]: For 45067/45067 co-relation queries the response was YES. [2024-06-21 19:19:33,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4261 conditions, 796 events. 395/796 cut-off events. For 45067/45067 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 4462 event pairs, 45 based on Foata normal form. 2/797 useless extension candidates. Maximal degree in co-relation 4151. Up to 678 conditions per place. [2024-06-21 19:19:33,573 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 179 selfloop transitions, 20 changer transitions 0/203 dead transitions. [2024-06-21 19:19:33,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 203 transitions, 2079 flow [2024-06-21 19:19:33,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:19:33,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:19:33,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-21 19:19:33,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42258064516129035 [2024-06-21 19:19:33,574 INFO L175 Difference]: Start difference. First operand has 231 places, 185 transitions, 1601 flow. Second operand 10 states and 131 transitions. [2024-06-21 19:19:33,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 203 transitions, 2079 flow [2024-06-21 19:19:33,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 203 transitions, 2008 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-21 19:19:33,696 INFO L231 Difference]: Finished difference. Result has 234 places, 186 transitions, 1612 flow [2024-06-21 19:19:33,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1530, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1612, PETRI_PLACES=234, PETRI_TRANSITIONS=186} [2024-06-21 19:19:33,697 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 204 predicate places. [2024-06-21 19:19:33,697 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 186 transitions, 1612 flow [2024-06-21 19:19:33,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:19:33,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:19:33,697 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:19:33,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-21 19:19:33,698 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:19:33,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:19:33,698 INFO L85 PathProgramCache]: Analyzing trace with hash -692326603, now seen corresponding path program 14 times [2024-06-21 19:19:33,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:19:33,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728062521] [2024-06-21 19:19:33,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:19:33,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:19:33,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:19:35,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:19:35,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:19:35,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728062521] [2024-06-21 19:19:35,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728062521] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:19:35,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:19:35,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:19:35,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346353023] [2024-06-21 19:19:35,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:19:35,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:19:35,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:19:35,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:19:35,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:19:35,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-21 19:19:35,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 186 transitions, 1612 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:19:35,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:19:35,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-21 19:19:35,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:19:36,377 INFO L124 PetriNetUnfolderBase]: 399/803 cut-off events. [2024-06-21 19:19:36,377 INFO L125 PetriNetUnfolderBase]: For 46444/46444 co-relation queries the response was YES. [2024-06-21 19:19:36,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4311 conditions, 803 events. 399/803 cut-off events. For 46444/46444 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 4501 event pairs, 51 based on Foata normal form. 2/804 useless extension candidates. Maximal degree in co-relation 4200. Up to 679 conditions per place. [2024-06-21 19:19:36,383 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 163 selfloop transitions, 33 changer transitions 0/200 dead transitions. [2024-06-21 19:19:36,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 200 transitions, 2074 flow [2024-06-21 19:19:36,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:19:36,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:19:36,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-21 19:19:36,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42258064516129035 [2024-06-21 19:19:36,385 INFO L175 Difference]: Start difference. First operand has 234 places, 186 transitions, 1612 flow. Second operand 10 states and 131 transitions. [2024-06-21 19:19:36,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 200 transitions, 2074 flow [2024-06-21 19:19:36,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 200 transitions, 2002 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-21 19:19:36,519 INFO L231 Difference]: Finished difference. Result has 236 places, 187 transitions, 1650 flow [2024-06-21 19:19:36,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1540, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1650, PETRI_PLACES=236, PETRI_TRANSITIONS=187} [2024-06-21 19:19:36,519 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 206 predicate places. [2024-06-21 19:19:36,519 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 187 transitions, 1650 flow [2024-06-21 19:19:36,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:19:36,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:19:36,519 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:19:36,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-21 19:19:36,520 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:19:36,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:19:36,520 INFO L85 PathProgramCache]: Analyzing trace with hash 562314947, now seen corresponding path program 15 times [2024-06-21 19:19:36,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:19:36,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266562179] [2024-06-21 19:19:36,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:19:36,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:19:36,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:19:37,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:19:37,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:19:37,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266562179] [2024-06-21 19:19:37,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266562179] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:19:37,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:19:37,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:19:37,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005223280] [2024-06-21 19:19:37,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:19:38,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:19:38,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:19:38,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:19:38,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:19:38,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-21 19:19:38,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 187 transitions, 1650 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:19:38,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:19:38,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-21 19:19:38,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:19:38,475 INFO L124 PetriNetUnfolderBase]: 403/811 cut-off events. [2024-06-21 19:19:38,475 INFO L125 PetriNetUnfolderBase]: For 47733/47733 co-relation queries the response was YES. [2024-06-21 19:19:38,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4385 conditions, 811 events. 403/811 cut-off events. For 47733/47733 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 4555 event pairs, 53 based on Foata normal form. 2/812 useless extension candidates. Maximal degree in co-relation 4273. Up to 699 conditions per place. [2024-06-21 19:19:38,481 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 170 selfloop transitions, 27 changer transitions 0/201 dead transitions. [2024-06-21 19:19:38,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 201 transitions, 2116 flow [2024-06-21 19:19:38,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:19:38,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:19:38,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-21 19:19:38,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-21 19:19:38,482 INFO L175 Difference]: Start difference. First operand has 236 places, 187 transitions, 1650 flow. Second operand 10 states and 130 transitions. [2024-06-21 19:19:38,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 201 transitions, 2116 flow [2024-06-21 19:19:38,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 201 transitions, 2016 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-21 19:19:38,614 INFO L231 Difference]: Finished difference. Result has 238 places, 188 transitions, 1650 flow [2024-06-21 19:19:38,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1550, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1650, PETRI_PLACES=238, PETRI_TRANSITIONS=188} [2024-06-21 19:19:38,614 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 208 predicate places. [2024-06-21 19:19:38,614 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 188 transitions, 1650 flow [2024-06-21 19:19:38,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:19:38,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:19:38,615 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:19:38,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-21 19:19:38,615 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:19:38,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:19:38,615 INFO L85 PathProgramCache]: Analyzing trace with hash 562167077, now seen corresponding path program 16 times [2024-06-21 19:19:38,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:19:38,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202186020] [2024-06-21 19:19:38,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:19:38,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:19:38,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:19:39,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:19:39,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:19:39,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202186020] [2024-06-21 19:19:39,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202186020] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:19:39,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:19:39,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:19:39,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384275282] [2024-06-21 19:19:39,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:19:39,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:19:39,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:19:39,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:19:39,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:19:39,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-21 19:19:39,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 188 transitions, 1650 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:19:39,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:19:39,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-21 19:19:39,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:19:40,342 INFO L124 PetriNetUnfolderBase]: 407/819 cut-off events. [2024-06-21 19:19:40,343 INFO L125 PetriNetUnfolderBase]: For 48950/48950 co-relation queries the response was YES. [2024-06-21 19:19:40,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4420 conditions, 819 events. 407/819 cut-off events. For 48950/48950 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 4609 event pairs, 53 based on Foata normal form. 2/820 useless extension candidates. Maximal degree in co-relation 4307. Up to 702 conditions per place. [2024-06-21 19:19:40,348 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 173 selfloop transitions, 26 changer transitions 0/203 dead transitions. [2024-06-21 19:19:40,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 203 transitions, 2124 flow [2024-06-21 19:19:40,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:19:40,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:19:40,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-21 19:19:40,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-21 19:19:40,349 INFO L175 Difference]: Start difference. First operand has 238 places, 188 transitions, 1650 flow. Second operand 10 states and 130 transitions. [2024-06-21 19:19:40,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 203 transitions, 2124 flow [2024-06-21 19:19:40,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 203 transitions, 2034 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-21 19:19:40,483 INFO L231 Difference]: Finished difference. Result has 240 places, 189 transitions, 1660 flow [2024-06-21 19:19:40,483 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1560, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1660, PETRI_PLACES=240, PETRI_TRANSITIONS=189} [2024-06-21 19:19:40,483 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 210 predicate places. [2024-06-21 19:19:40,483 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 189 transitions, 1660 flow [2024-06-21 19:19:40,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:19:40,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:19:40,484 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:19:40,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-21 19:19:40,484 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:19:40,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:19:40,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1346162211, now seen corresponding path program 17 times [2024-06-21 19:19:40,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:19:40,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606732160] [2024-06-21 19:19:40,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:19:40,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:19:40,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:19:41,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:19:41,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:19:41,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606732160] [2024-06-21 19:19:41,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606732160] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:19:41,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:19:41,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:19:41,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556693652] [2024-06-21 19:19:41,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:19:41,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:19:41,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:19:41,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:19:41,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:19:41,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-21 19:19:41,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 189 transitions, 1660 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:19:41,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:19:41,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-21 19:19:41,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:19:42,165 INFO L124 PetriNetUnfolderBase]: 411/828 cut-off events. [2024-06-21 19:19:42,166 INFO L125 PetriNetUnfolderBase]: For 50378/50378 co-relation queries the response was YES. [2024-06-21 19:19:42,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4470 conditions, 828 events. 411/828 cut-off events. For 50378/50378 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 4670 event pairs, 54 based on Foata normal form. 2/829 useless extension candidates. Maximal degree in co-relation 4356. Up to 710 conditions per place. [2024-06-21 19:19:42,171 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 183 selfloop transitions, 21 changer transitions 0/208 dead transitions. [2024-06-21 19:19:42,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 208 transitions, 2158 flow [2024-06-21 19:19:42,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:19:42,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:19:42,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-21 19:19:42,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42258064516129035 [2024-06-21 19:19:42,173 INFO L175 Difference]: Start difference. First operand has 240 places, 189 transitions, 1660 flow. Second operand 10 states and 131 transitions. [2024-06-21 19:19:42,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 208 transitions, 2158 flow [2024-06-21 19:19:42,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 208 transitions, 2068 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-21 19:19:42,326 INFO L231 Difference]: Finished difference. Result has 242 places, 190 transitions, 1662 flow [2024-06-21 19:19:42,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1570, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1662, PETRI_PLACES=242, PETRI_TRANSITIONS=190} [2024-06-21 19:19:42,326 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 212 predicate places. [2024-06-21 19:19:42,326 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 190 transitions, 1662 flow [2024-06-21 19:19:42,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:19:42,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:19:42,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:19:42,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-21 19:19:42,327 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:19:42,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:19:42,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1686357975, now seen corresponding path program 18 times [2024-06-21 19:19:42,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:19:42,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875049207] [2024-06-21 19:19:42,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:19:42,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:19:42,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:19:43,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:19:43,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:19:43,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875049207] [2024-06-21 19:19:43,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875049207] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:19:43,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:19:43,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:19:43,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168641045] [2024-06-21 19:19:43,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:19:43,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:19:43,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:19:43,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:19:43,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:19:43,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-21 19:19:44,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 190 transitions, 1662 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:19:44,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:19:44,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-21 19:19:44,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:19:44,339 INFO L124 PetriNetUnfolderBase]: 415/836 cut-off events. [2024-06-21 19:19:44,340 INFO L125 PetriNetUnfolderBase]: For 51784/51784 co-relation queries the response was YES. [2024-06-21 19:19:44,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4516 conditions, 836 events. 415/836 cut-off events. For 51784/51784 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 4713 event pairs, 63 based on Foata normal form. 2/837 useless extension candidates. Maximal degree in co-relation 4401. Up to 732 conditions per place. [2024-06-21 19:19:44,346 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 180 selfloop transitions, 23 changer transitions 0/207 dead transitions. [2024-06-21 19:19:44,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 207 transitions, 2161 flow [2024-06-21 19:19:44,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:19:44,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:19:44,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-21 19:19:44,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-21 19:19:44,347 INFO L175 Difference]: Start difference. First operand has 242 places, 190 transitions, 1662 flow. Second operand 10 states and 130 transitions. [2024-06-21 19:19:44,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 207 transitions, 2161 flow [2024-06-21 19:19:44,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 207 transitions, 2079 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-21 19:19:44,519 INFO L231 Difference]: Finished difference. Result has 245 places, 192 transitions, 1692 flow [2024-06-21 19:19:44,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1580, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1692, PETRI_PLACES=245, PETRI_TRANSITIONS=192} [2024-06-21 19:19:44,519 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 215 predicate places. [2024-06-21 19:19:44,519 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 192 transitions, 1692 flow [2024-06-21 19:19:44,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:19:44,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:19:44,519 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:19:44,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-21 19:19:44,520 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:19:44,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:19:44,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1674483735, now seen corresponding path program 19 times [2024-06-21 19:19:44,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:19:44,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823301369] [2024-06-21 19:19:44,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:19:44,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:19:44,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:19:45,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:19:45,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:19:45,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823301369] [2024-06-21 19:19:45,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823301369] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:19:45,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:19:45,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:19:45,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633643620] [2024-06-21 19:19:45,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:19:45,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:19:45,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:19:45,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:19:45,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:19:45,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-21 19:19:45,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 192 transitions, 1692 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:19:45,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:19:45,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-21 19:19:45,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:19:46,127 INFO L124 PetriNetUnfolderBase]: 419/844 cut-off events. [2024-06-21 19:19:46,127 INFO L125 PetriNetUnfolderBase]: For 53180/53180 co-relation queries the response was YES. [2024-06-21 19:19:46,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4574 conditions, 844 events. 419/844 cut-off events. For 53180/53180 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 4760 event pairs, 64 based on Foata normal form. 2/845 useless extension candidates. Maximal degree in co-relation 4457. Up to 735 conditions per place. [2024-06-21 19:19:46,133 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 183 selfloop transitions, 22 changer transitions 0/209 dead transitions. [2024-06-21 19:19:46,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 209 transitions, 2190 flow [2024-06-21 19:19:46,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:19:46,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:19:46,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-21 19:19:46,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-21 19:19:46,134 INFO L175 Difference]: Start difference. First operand has 245 places, 192 transitions, 1692 flow. Second operand 10 states and 130 transitions. [2024-06-21 19:19:46,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 209 transitions, 2190 flow [2024-06-21 19:19:46,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 209 transitions, 2101 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-21 19:19:46,309 INFO L231 Difference]: Finished difference. Result has 248 places, 193 transitions, 1701 flow [2024-06-21 19:19:46,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1603, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1701, PETRI_PLACES=248, PETRI_TRANSITIONS=193} [2024-06-21 19:19:46,309 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 218 predicate places. [2024-06-21 19:19:46,309 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 193 transitions, 1701 flow [2024-06-21 19:19:46,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:19:46,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:19:46,309 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:19:46,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-21 19:19:46,309 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:19:46,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:19:46,310 INFO L85 PathProgramCache]: Analyzing trace with hash 753465321, now seen corresponding path program 20 times [2024-06-21 19:19:46,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:19:46,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371832095] [2024-06-21 19:19:46,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:19:46,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:19:46,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:19:47,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:19:47,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:19:47,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371832095] [2024-06-21 19:19:47,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371832095] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:19:47,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:19:47,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:19:47,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940278016] [2024-06-21 19:19:47,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:19:47,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:19:47,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:19:47,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:19:47,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:19:47,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 31 [2024-06-21 19:19:47,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 193 transitions, 1701 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:19:47,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:19:47,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 31 [2024-06-21 19:19:47,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:19:47,856 INFO L124 PetriNetUnfolderBase]: 373/793 cut-off events. [2024-06-21 19:19:47,856 INFO L125 PetriNetUnfolderBase]: For 47124/47127 co-relation queries the response was YES. [2024-06-21 19:19:47,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3993 conditions, 793 events. 373/793 cut-off events. For 47124/47127 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 4655 event pairs, 30 based on Foata normal form. 4/793 useless extension candidates. Maximal degree in co-relation 3875. Up to 482 conditions per place. [2024-06-21 19:19:47,862 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 112 selfloop transitions, 28 changer transitions 0/208 dead transitions. [2024-06-21 19:19:47,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 208 transitions, 2017 flow [2024-06-21 19:19:47,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:19:47,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:19:47,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 131 transitions. [2024-06-21 19:19:47,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46953405017921146 [2024-06-21 19:19:47,863 INFO L175 Difference]: Start difference. First operand has 248 places, 193 transitions, 1701 flow. Second operand 9 states and 131 transitions. [2024-06-21 19:19:47,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 208 transitions, 2017 flow [2024-06-21 19:19:48,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 208 transitions, 1929 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-21 19:19:48,053 INFO L231 Difference]: Finished difference. Result has 249 places, 193 transitions, 1680 flow [2024-06-21 19:19:48,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1613, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1680, PETRI_PLACES=249, PETRI_TRANSITIONS=193} [2024-06-21 19:19:48,053 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 219 predicate places. [2024-06-21 19:19:48,053 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 193 transitions, 1680 flow [2024-06-21 19:19:48,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:19:48,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:19:48,053 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:19:48,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-21 19:19:48,053 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:19:48,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:19:48,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1300372207, now seen corresponding path program 1 times [2024-06-21 19:19:48,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:19:48,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103603816] [2024-06-21 19:19:48,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:19:48,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:19:48,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:19:50,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:19:50,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:19:50,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103603816] [2024-06-21 19:19:50,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103603816] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:19:50,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:19:50,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:19:50,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912047922] [2024-06-21 19:19:50,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:19:50,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:19:50,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:19:50,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:19:50,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:19:50,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-21 19:19:50,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 193 transitions, 1680 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:19:50,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:19:50,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-21 19:19:50,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:19:50,708 INFO L124 PetriNetUnfolderBase]: 420/846 cut-off events. [2024-06-21 19:19:50,708 INFO L125 PetriNetUnfolderBase]: For 46823/46823 co-relation queries the response was YES. [2024-06-21 19:19:50,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4290 conditions, 846 events. 420/846 cut-off events. For 46823/46823 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 4795 event pairs, 58 based on Foata normal form. 2/847 useless extension candidates. Maximal degree in co-relation 4171. Up to 658 conditions per place. [2024-06-21 19:19:50,714 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 147 selfloop transitions, 55 changer transitions 0/206 dead transitions. [2024-06-21 19:19:50,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 206 transitions, 2128 flow [2024-06-21 19:19:50,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:19:50,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:19:50,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 143 transitions. [2024-06-21 19:19:50,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4612903225806452 [2024-06-21 19:19:50,715 INFO L175 Difference]: Start difference. First operand has 249 places, 193 transitions, 1680 flow. Second operand 10 states and 143 transitions. [2024-06-21 19:19:50,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 206 transitions, 2128 flow [2024-06-21 19:19:50,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 206 transitions, 1980 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-21 19:19:50,881 INFO L231 Difference]: Finished difference. Result has 251 places, 194 transitions, 1664 flow [2024-06-21 19:19:50,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1532, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1664, PETRI_PLACES=251, PETRI_TRANSITIONS=194} [2024-06-21 19:19:50,881 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 221 predicate places. [2024-06-21 19:19:50,881 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 194 transitions, 1664 flow [2024-06-21 19:19:50,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:19:50,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:19:50,882 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:19:50,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-21 19:19:50,882 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:19:50,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:19:50,882 INFO L85 PathProgramCache]: Analyzing trace with hash 416604577, now seen corresponding path program 2 times [2024-06-21 19:19:50,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:19:50,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644572941] [2024-06-21 19:19:50,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:19:50,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:19:50,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:19:52,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:19:52,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:19:52,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644572941] [2024-06-21 19:19:52,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644572941] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:19:52,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:19:52,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:19:52,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012953352] [2024-06-21 19:19:52,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:19:52,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:19:52,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:19:52,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:19:52,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:19:52,929 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-21 19:19:52,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 194 transitions, 1664 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:19:52,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:19:52,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-21 19:19:52,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:19:53,395 INFO L124 PetriNetUnfolderBase]: 453/913 cut-off events. [2024-06-21 19:19:53,396 INFO L125 PetriNetUnfolderBase]: For 79237/79237 co-relation queries the response was YES. [2024-06-21 19:19:53,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5347 conditions, 913 events. 453/913 cut-off events. For 79237/79237 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 5242 event pairs, 75 based on Foata normal form. 2/914 useless extension candidates. Maximal degree in co-relation 5227. Up to 642 conditions per place. [2024-06-21 19:19:53,404 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 152 selfloop transitions, 57 changer transitions 0/213 dead transitions. [2024-06-21 19:19:53,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 213 transitions, 2356 flow [2024-06-21 19:19:53,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:19:53,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:19:53,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 148 transitions. [2024-06-21 19:19:53,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4774193548387097 [2024-06-21 19:19:53,405 INFO L175 Difference]: Start difference. First operand has 251 places, 194 transitions, 1664 flow. Second operand 10 states and 148 transitions. [2024-06-21 19:19:53,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 213 transitions, 2356 flow [2024-06-21 19:19:53,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 213 transitions, 2234 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-21 19:19:53,650 INFO L231 Difference]: Finished difference. Result has 253 places, 196 transitions, 1699 flow [2024-06-21 19:19:53,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1542, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1699, PETRI_PLACES=253, PETRI_TRANSITIONS=196} [2024-06-21 19:19:53,651 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 223 predicate places. [2024-06-21 19:19:53,651 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 196 transitions, 1699 flow [2024-06-21 19:19:53,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:19:53,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:19:53,651 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:19:53,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-21 19:19:53,651 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:19:53,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:19:53,651 INFO L85 PathProgramCache]: Analyzing trace with hash 2042538625, now seen corresponding path program 3 times [2024-06-21 19:19:53,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:19:53,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884212547] [2024-06-21 19:19:53,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:19:53,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:19:53,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:19:55,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:19:55,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:19:55,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884212547] [2024-06-21 19:19:55,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884212547] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:19:55,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:19:55,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:19:55,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598513558] [2024-06-21 19:19:55,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:19:55,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:19:55,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:19:55,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:19:55,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:19:55,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-21 19:19:55,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 196 transitions, 1699 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:19:55,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:19:55,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-21 19:19:55,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:19:56,285 INFO L124 PetriNetUnfolderBase]: 494/1000 cut-off events. [2024-06-21 19:19:56,285 INFO L125 PetriNetUnfolderBase]: For 136514/136514 co-relation queries the response was YES. [2024-06-21 19:19:56,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6608 conditions, 1000 events. 494/1000 cut-off events. For 136514/136514 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 5854 event pairs, 94 based on Foata normal form. 8/1007 useless extension candidates. Maximal degree in co-relation 6487. Up to 761 conditions per place. [2024-06-21 19:19:56,294 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 173 selfloop transitions, 31 changer transitions 9/217 dead transitions. [2024-06-21 19:19:56,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 217 transitions, 2423 flow [2024-06-21 19:19:56,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:19:56,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:19:56,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 147 transitions. [2024-06-21 19:19:56,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47419354838709676 [2024-06-21 19:19:56,295 INFO L175 Difference]: Start difference. First operand has 253 places, 196 transitions, 1699 flow. Second operand 10 states and 147 transitions. [2024-06-21 19:19:56,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 217 transitions, 2423 flow [2024-06-21 19:19:56,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 217 transitions, 2332 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-21 19:19:56,781 INFO L231 Difference]: Finished difference. Result has 257 places, 192 transitions, 1642 flow [2024-06-21 19:19:56,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1608, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1642, PETRI_PLACES=257, PETRI_TRANSITIONS=192} [2024-06-21 19:19:56,782 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 227 predicate places. [2024-06-21 19:19:56,782 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 192 transitions, 1642 flow [2024-06-21 19:19:56,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:19:56,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:19:56,782 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:19:56,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-21 19:19:56,782 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:19:56,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:19:56,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1466605987, now seen corresponding path program 4 times [2024-06-21 19:19:56,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:19:56,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408613014] [2024-06-21 19:19:56,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:19:56,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:19:56,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:19:59,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:19:59,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:19:59,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408613014] [2024-06-21 19:19:59,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408613014] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:19:59,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:19:59,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:19:59,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438176039] [2024-06-21 19:19:59,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:19:59,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:19:59,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:19:59,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:19:59,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:19:59,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-21 19:19:59,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 192 transitions, 1642 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:19:59,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:19:59,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-21 19:19:59,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:19:59,629 INFO L124 PetriNetUnfolderBase]: 467/947 cut-off events. [2024-06-21 19:19:59,630 INFO L125 PetriNetUnfolderBase]: For 112123/112123 co-relation queries the response was YES. [2024-06-21 19:19:59,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6225 conditions, 947 events. 467/947 cut-off events. For 112123/112123 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 5483 event pairs, 89 based on Foata normal form. 2/948 useless extension candidates. Maximal degree in co-relation 6102. Up to 818 conditions per place. [2024-06-21 19:19:59,639 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 169 selfloop transitions, 32 changer transitions 0/205 dead transitions. [2024-06-21 19:19:59,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 205 transitions, 2092 flow [2024-06-21 19:19:59,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:19:59,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:19:59,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 128 transitions. [2024-06-21 19:19:59,640 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45878136200716846 [2024-06-21 19:19:59,640 INFO L175 Difference]: Start difference. First operand has 257 places, 192 transitions, 1642 flow. Second operand 9 states and 128 transitions. [2024-06-21 19:19:59,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 205 transitions, 2092 flow [2024-06-21 19:20:00,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 205 transitions, 2027 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-21 19:20:00,003 INFO L231 Difference]: Finished difference. Result has 253 places, 193 transitions, 1667 flow [2024-06-21 19:20:00,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1577, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1667, PETRI_PLACES=253, PETRI_TRANSITIONS=193} [2024-06-21 19:20:00,003 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 223 predicate places. [2024-06-21 19:20:00,003 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 193 transitions, 1667 flow [2024-06-21 19:20:00,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:00,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:20:00,004 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:20:00,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-21 19:20:00,004 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:20:00,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:20:00,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1736785409, now seen corresponding path program 5 times [2024-06-21 19:20:00,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:20:00,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187143115] [2024-06-21 19:20:00,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:20:00,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:20:00,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:20:01,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:20:01,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:20:01,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187143115] [2024-06-21 19:20:01,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187143115] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:20:01,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:20:01,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:20:01,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228570155] [2024-06-21 19:20:01,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:20:01,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:20:01,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:20:01,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:20:01,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:20:02,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-21 19:20:02,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 193 transitions, 1667 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:02,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:20:02,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-21 19:20:02,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:20:02,484 INFO L124 PetriNetUnfolderBase]: 471/955 cut-off events. [2024-06-21 19:20:02,484 INFO L125 PetriNetUnfolderBase]: For 106548/106548 co-relation queries the response was YES. [2024-06-21 19:20:02,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6244 conditions, 955 events. 471/955 cut-off events. For 106548/106548 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 5551 event pairs, 81 based on Foata normal form. 2/956 useless extension candidates. Maximal degree in co-relation 6124. Up to 803 conditions per place. [2024-06-21 19:20:02,492 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 171 selfloop transitions, 33 changer transitions 0/208 dead transitions. [2024-06-21 19:20:02,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 208 transitions, 2129 flow [2024-06-21 19:20:02,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:20:02,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:20:02,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 138 transitions. [2024-06-21 19:20:02,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44516129032258067 [2024-06-21 19:20:02,493 INFO L175 Difference]: Start difference. First operand has 253 places, 193 transitions, 1667 flow. Second operand 10 states and 138 transitions. [2024-06-21 19:20:02,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 208 transitions, 2129 flow [2024-06-21 19:20:02,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 208 transitions, 2049 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-21 19:20:02,870 INFO L231 Difference]: Finished difference. Result has 256 places, 194 transitions, 1682 flow [2024-06-21 19:20:02,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1587, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1682, PETRI_PLACES=256, PETRI_TRANSITIONS=194} [2024-06-21 19:20:02,871 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 226 predicate places. [2024-06-21 19:20:02,871 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 194 transitions, 1682 flow [2024-06-21 19:20:02,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:02,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:20:02,871 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:20:02,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-21 19:20:02,871 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:20:02,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:20:02,872 INFO L85 PathProgramCache]: Analyzing trace with hash -140961697, now seen corresponding path program 6 times [2024-06-21 19:20:02,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:20:02,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698972499] [2024-06-21 19:20:02,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:20:02,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:20:02,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:20:05,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:20:05,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:20:05,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698972499] [2024-06-21 19:20:05,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698972499] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:20:05,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:20:05,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:20:05,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866805014] [2024-06-21 19:20:05,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:20:05,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:20:05,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:20:05,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:20:05,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:20:05,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-21 19:20:05,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 194 transitions, 1682 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:05,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:20:05,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-21 19:20:05,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:20:06,087 INFO L124 PetriNetUnfolderBase]: 458/932 cut-off events. [2024-06-21 19:20:06,088 INFO L125 PetriNetUnfolderBase]: For 102385/102385 co-relation queries the response was YES. [2024-06-21 19:20:06,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5306 conditions, 932 events. 458/932 cut-off events. For 102385/102385 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 5406 event pairs, 82 based on Foata normal form. 10/941 useless extension candidates. Maximal degree in co-relation 5184. Up to 712 conditions per place. [2024-06-21 19:20:06,094 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 145 selfloop transitions, 54 changer transitions 6/209 dead transitions. [2024-06-21 19:20:06,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 209 transitions, 2156 flow [2024-06-21 19:20:06,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:20:06,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:20:06,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 145 transitions. [2024-06-21 19:20:06,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46774193548387094 [2024-06-21 19:20:06,095 INFO L175 Difference]: Start difference. First operand has 256 places, 194 transitions, 1682 flow. Second operand 10 states and 145 transitions. [2024-06-21 19:20:06,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 209 transitions, 2156 flow [2024-06-21 19:20:06,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 209 transitions, 2061 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-21 19:20:06,310 INFO L231 Difference]: Finished difference. Result has 258 places, 191 transitions, 1679 flow [2024-06-21 19:20:06,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1587, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1679, PETRI_PLACES=258, PETRI_TRANSITIONS=191} [2024-06-21 19:20:06,310 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 228 predicate places. [2024-06-21 19:20:06,310 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 191 transitions, 1679 flow [2024-06-21 19:20:06,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:06,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:20:06,310 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:20:06,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-21 19:20:06,311 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:20:06,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:20:06,311 INFO L85 PathProgramCache]: Analyzing trace with hash -862450083, now seen corresponding path program 7 times [2024-06-21 19:20:06,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:20:06,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981448335] [2024-06-21 19:20:06,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:20:06,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:20:06,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:20:08,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:20:08,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:20:08,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981448335] [2024-06-21 19:20:08,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981448335] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:20:08,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:20:08,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:20:08,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633091330] [2024-06-21 19:20:08,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:20:08,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:20:08,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:20:08,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:20:08,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:20:08,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-21 19:20:08,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 191 transitions, 1679 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:08,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:20:08,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-21 19:20:08,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:20:08,636 INFO L124 PetriNetUnfolderBase]: 445/904 cut-off events. [2024-06-21 19:20:08,636 INFO L125 PetriNetUnfolderBase]: For 75896/75896 co-relation queries the response was YES. [2024-06-21 19:20:08,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5220 conditions, 904 events. 445/904 cut-off events. For 75896/75896 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 5214 event pairs, 75 based on Foata normal form. 2/905 useless extension candidates. Maximal degree in co-relation 5097. Up to 747 conditions per place. [2024-06-21 19:20:08,643 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 175 selfloop transitions, 29 changer transitions 0/208 dead transitions. [2024-06-21 19:20:08,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 208 transitions, 2149 flow [2024-06-21 19:20:08,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:20:08,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:20:08,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 130 transitions. [2024-06-21 19:20:08,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4659498207885305 [2024-06-21 19:20:08,644 INFO L175 Difference]: Start difference. First operand has 258 places, 191 transitions, 1679 flow. Second operand 9 states and 130 transitions. [2024-06-21 19:20:08,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 208 transitions, 2149 flow [2024-06-21 19:20:08,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 208 transitions, 2024 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-21 19:20:08,888 INFO L231 Difference]: Finished difference. Result has 257 places, 192 transitions, 1644 flow [2024-06-21 19:20:08,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1554, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1644, PETRI_PLACES=257, PETRI_TRANSITIONS=192} [2024-06-21 19:20:08,889 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 227 predicate places. [2024-06-21 19:20:08,889 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 192 transitions, 1644 flow [2024-06-21 19:20:08,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:08,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:20:08,889 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:20:08,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-21 19:20:08,889 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:20:08,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:20:08,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1992083327, now seen corresponding path program 8 times [2024-06-21 19:20:08,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:20:08,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918058453] [2024-06-21 19:20:08,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:20:08,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:20:08,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:20:10,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:20:10,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:20:10,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918058453] [2024-06-21 19:20:10,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918058453] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:20:10,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:20:10,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:20:10,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324227777] [2024-06-21 19:20:10,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:20:10,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:20:10,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:20:10,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:20:10,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:20:11,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-21 19:20:11,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 192 transitions, 1644 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:11,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:20:11,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-21 19:20:11,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:20:11,380 INFO L124 PetriNetUnfolderBase]: 449/912 cut-off events. [2024-06-21 19:20:11,380 INFO L125 PetriNetUnfolderBase]: For 77938/77938 co-relation queries the response was YES. [2024-06-21 19:20:11,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5260 conditions, 912 events. 449/912 cut-off events. For 77938/77938 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 5303 event pairs, 85 based on Foata normal form. 2/913 useless extension candidates. Maximal degree in co-relation 5137. Up to 791 conditions per place. [2024-06-21 19:20:11,387 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 172 selfloop transitions, 31 changer transitions 1/208 dead transitions. [2024-06-21 19:20:11,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 208 transitions, 2121 flow [2024-06-21 19:20:11,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:20:11,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:20:11,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-21 19:20:11,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4161290322580645 [2024-06-21 19:20:11,389 INFO L175 Difference]: Start difference. First operand has 257 places, 192 transitions, 1644 flow. Second operand 10 states and 129 transitions. [2024-06-21 19:20:11,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 208 transitions, 2121 flow [2024-06-21 19:20:11,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 208 transitions, 2045 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-21 19:20:11,678 INFO L231 Difference]: Finished difference. Result has 261 places, 193 transitions, 1668 flow [2024-06-21 19:20:11,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1568, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1668, PETRI_PLACES=261, PETRI_TRANSITIONS=193} [2024-06-21 19:20:11,679 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 231 predicate places. [2024-06-21 19:20:11,679 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 193 transitions, 1668 flow [2024-06-21 19:20:11,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:11,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:20:11,679 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:20:11,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-21 19:20:11,679 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:20:11,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:20:11,679 INFO L85 PathProgramCache]: Analyzing trace with hash -857866113, now seen corresponding path program 9 times [2024-06-21 19:20:11,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:20:11,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901915072] [2024-06-21 19:20:11,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:20:11,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:20:11,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:20:13,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:20:13,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:20:13,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901915072] [2024-06-21 19:20:13,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901915072] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:20:13,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:20:13,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:20:13,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437169665] [2024-06-21 19:20:13,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:20:13,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:20:13,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:20:13,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:20:13,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:20:13,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-21 19:20:13,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 193 transitions, 1668 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:13,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:20:13,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-21 19:20:13,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:20:14,246 INFO L124 PetriNetUnfolderBase]: 442/895 cut-off events. [2024-06-21 19:20:14,246 INFO L125 PetriNetUnfolderBase]: For 79640/79640 co-relation queries the response was YES. [2024-06-21 19:20:14,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5223 conditions, 895 events. 442/895 cut-off events. For 79640/79640 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 5144 event pairs, 80 based on Foata normal form. 2/896 useless extension candidates. Maximal degree in co-relation 5097. Up to 740 conditions per place. [2024-06-21 19:20:14,253 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 173 selfloop transitions, 32 changer transitions 0/209 dead transitions. [2024-06-21 19:20:14,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 209 transitions, 2142 flow [2024-06-21 19:20:14,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:20:14,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:20:14,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 140 transitions. [2024-06-21 19:20:14,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45161290322580644 [2024-06-21 19:20:14,254 INFO L175 Difference]: Start difference. First operand has 261 places, 193 transitions, 1668 flow. Second operand 10 states and 140 transitions. [2024-06-21 19:20:14,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 209 transitions, 2142 flow [2024-06-21 19:20:14,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 209 transitions, 2058 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-21 19:20:14,473 INFO L231 Difference]: Finished difference. Result has 264 places, 194 transitions, 1684 flow [2024-06-21 19:20:14,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1584, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1684, PETRI_PLACES=264, PETRI_TRANSITIONS=194} [2024-06-21 19:20:14,473 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 234 predicate places. [2024-06-21 19:20:14,473 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 194 transitions, 1684 flow [2024-06-21 19:20:14,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:14,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:20:14,473 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:20:14,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-21 19:20:14,473 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:20:14,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:20:14,474 INFO L85 PathProgramCache]: Analyzing trace with hash -265688065, now seen corresponding path program 10 times [2024-06-21 19:20:14,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:20:14,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339187134] [2024-06-21 19:20:14,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:20:14,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:20:14,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:20:16,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:20:16,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:20:16,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339187134] [2024-06-21 19:20:16,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339187134] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:20:16,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:20:16,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:20:16,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975449831] [2024-06-21 19:20:16,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:20:16,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:20:16,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:20:16,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:20:16,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:20:16,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-21 19:20:16,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 194 transitions, 1684 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:16,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:20:16,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-21 19:20:16,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:20:16,615 INFO L124 PetriNetUnfolderBase]: 454/923 cut-off events. [2024-06-21 19:20:16,616 INFO L125 PetriNetUnfolderBase]: For 103278/103278 co-relation queries the response was YES. [2024-06-21 19:20:16,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5354 conditions, 923 events. 454/923 cut-off events. For 103278/103278 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 5327 event pairs, 59 based on Foata normal form. 8/930 useless extension candidates. Maximal degree in co-relation 5227. Up to 680 conditions per place. [2024-06-21 19:20:16,623 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 167 selfloop transitions, 13 changer transitions 30/214 dead transitions. [2024-06-21 19:20:16,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 214 transitions, 2192 flow [2024-06-21 19:20:16,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:20:16,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:20:16,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 140 transitions. [2024-06-21 19:20:16,624 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45161290322580644 [2024-06-21 19:20:16,624 INFO L175 Difference]: Start difference. First operand has 264 places, 194 transitions, 1684 flow. Second operand 10 states and 140 transitions. [2024-06-21 19:20:16,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 214 transitions, 2192 flow [2024-06-21 19:20:16,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 214 transitions, 2106 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-21 19:20:16,873 INFO L231 Difference]: Finished difference. Result has 266 places, 177 transitions, 1483 flow [2024-06-21 19:20:16,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1598, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1483, PETRI_PLACES=266, PETRI_TRANSITIONS=177} [2024-06-21 19:20:16,873 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 236 predicate places. [2024-06-21 19:20:16,874 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 177 transitions, 1483 flow [2024-06-21 19:20:16,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:16,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:20:16,874 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:20:16,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-21 19:20:16,874 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:20:16,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:20:16,874 INFO L85 PathProgramCache]: Analyzing trace with hash 416789151, now seen corresponding path program 1 times [2024-06-21 19:20:16,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:20:16,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842089162] [2024-06-21 19:20:16,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:20:16,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:20:16,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:20:19,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:20:19,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:20:19,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842089162] [2024-06-21 19:20:19,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842089162] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:20:19,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:20:19,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:20:19,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716428011] [2024-06-21 19:20:19,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:20:19,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:20:19,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:20:19,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:20:19,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:20:19,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-21 19:20:19,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 177 transitions, 1483 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:19,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:20:19,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-21 19:20:19,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:20:20,205 INFO L124 PetriNetUnfolderBase]: 389/795 cut-off events. [2024-06-21 19:20:20,205 INFO L125 PetriNetUnfolderBase]: For 107140/107140 co-relation queries the response was YES. [2024-06-21 19:20:20,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4793 conditions, 795 events. 389/795 cut-off events. For 107140/107140 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 4438 event pairs, 57 based on Foata normal form. 8/802 useless extension candidates. Maximal degree in co-relation 4678. Up to 591 conditions per place. [2024-06-21 19:20:20,210 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 136 selfloop transitions, 42 changer transitions 9/191 dead transitions. [2024-06-21 19:20:20,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 191 transitions, 1917 flow [2024-06-21 19:20:20,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:20:20,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:20:20,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 151 transitions. [2024-06-21 19:20:20,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44281524926686217 [2024-06-21 19:20:20,213 INFO L175 Difference]: Start difference. First operand has 266 places, 177 transitions, 1483 flow. Second operand 11 states and 151 transitions. [2024-06-21 19:20:20,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 191 transitions, 1917 flow [2024-06-21 19:20:20,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 191 transitions, 1784 flow, removed 8 selfloop flow, removed 23 redundant places. [2024-06-21 19:20:20,421 INFO L231 Difference]: Finished difference. Result has 240 places, 174 transitions, 1417 flow [2024-06-21 19:20:20,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1352, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1417, PETRI_PLACES=240, PETRI_TRANSITIONS=174} [2024-06-21 19:20:20,422 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 210 predicate places. [2024-06-21 19:20:20,422 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 174 transitions, 1417 flow [2024-06-21 19:20:20,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:20,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:20:20,422 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:20:20,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-21 19:20:20,423 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:20:20,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:20:20,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1294109153, now seen corresponding path program 2 times [2024-06-21 19:20:20,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:20:20,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535565731] [2024-06-21 19:20:20,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:20:20,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:20:20,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:20:23,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:20:23,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:20:23,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535565731] [2024-06-21 19:20:23,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535565731] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:20:23,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:20:23,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:20:23,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599386608] [2024-06-21 19:20:23,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:20:23,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:20:23,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:20:23,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:20:23,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:20:23,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-21 19:20:23,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 174 transitions, 1417 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:23,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:20:23,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-21 19:20:23,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:20:23,866 INFO L124 PetriNetUnfolderBase]: 384/792 cut-off events. [2024-06-21 19:20:23,866 INFO L125 PetriNetUnfolderBase]: For 95032/95032 co-relation queries the response was YES. [2024-06-21 19:20:23,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4560 conditions, 792 events. 384/792 cut-off events. For 95032/95032 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 4428 event pairs, 59 based on Foata normal form. 8/799 useless extension candidates. Maximal degree in co-relation 4457. Up to 587 conditions per place. [2024-06-21 19:20:23,871 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 131 selfloop transitions, 44 changer transitions 9/188 dead transitions. [2024-06-21 19:20:23,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 188 transitions, 1843 flow [2024-06-21 19:20:23,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:20:23,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:20:23,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 150 transitions. [2024-06-21 19:20:23,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4398826979472141 [2024-06-21 19:20:23,872 INFO L175 Difference]: Start difference. First operand has 240 places, 174 transitions, 1417 flow. Second operand 11 states and 150 transitions. [2024-06-21 19:20:23,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 188 transitions, 1843 flow [2024-06-21 19:20:24,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 188 transitions, 1755 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-21 19:20:24,041 INFO L231 Difference]: Finished difference. Result has 238 places, 171 transitions, 1398 flow [2024-06-21 19:20:24,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1329, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1398, PETRI_PLACES=238, PETRI_TRANSITIONS=171} [2024-06-21 19:20:24,041 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 208 predicate places. [2024-06-21 19:20:24,042 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 171 transitions, 1398 flow [2024-06-21 19:20:24,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:24,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:20:24,042 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:20:24,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-21 19:20:24,042 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:20:24,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:20:24,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1466599043, now seen corresponding path program 3 times [2024-06-21 19:20:24,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:20:24,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504945148] [2024-06-21 19:20:24,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:20:24,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:20:24,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:20:26,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:20:26,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:20:26,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504945148] [2024-06-21 19:20:26,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504945148] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:20:26,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:20:26,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:20:26,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066421424] [2024-06-21 19:20:26,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:20:26,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:20:26,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:20:26,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:20:26,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:20:26,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-21 19:20:26,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 171 transitions, 1398 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:26,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:20:26,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-21 19:20:26,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:20:27,496 INFO L124 PetriNetUnfolderBase]: 372/772 cut-off events. [2024-06-21 19:20:27,497 INFO L125 PetriNetUnfolderBase]: For 85499/85499 co-relation queries the response was YES. [2024-06-21 19:20:27,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4273 conditions, 772 events. 372/772 cut-off events. For 85499/85499 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4285 event pairs, 58 based on Foata normal form. 8/779 useless extension candidates. Maximal degree in co-relation 4171. Up to 614 conditions per place. [2024-06-21 19:20:27,502 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 145 selfloop transitions, 27 changer transitions 9/185 dead transitions. [2024-06-21 19:20:27,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 185 transitions, 1818 flow [2024-06-21 19:20:27,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:20:27,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:20:27,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-21 19:20:27,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4281524926686217 [2024-06-21 19:20:27,504 INFO L175 Difference]: Start difference. First operand has 238 places, 171 transitions, 1398 flow. Second operand 11 states and 146 transitions. [2024-06-21 19:20:27,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 185 transitions, 1818 flow [2024-06-21 19:20:27,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 185 transitions, 1726 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-21 19:20:27,683 INFO L231 Difference]: Finished difference. Result has 236 places, 168 transitions, 1339 flow [2024-06-21 19:20:27,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1306, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1339, PETRI_PLACES=236, PETRI_TRANSITIONS=168} [2024-06-21 19:20:27,683 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 206 predicate places. [2024-06-21 19:20:27,683 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 168 transitions, 1339 flow [2024-06-21 19:20:27,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:27,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:20:27,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:20:27,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-21 19:20:27,684 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:20:27,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:20:27,684 INFO L85 PathProgramCache]: Analyzing trace with hash 653261181, now seen corresponding path program 4 times [2024-06-21 19:20:27,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:20:27,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669228589] [2024-06-21 19:20:27,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:20:27,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:20:27,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:20:29,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:20:29,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:20:29,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669228589] [2024-06-21 19:20:29,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669228589] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:20:29,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:20:29,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:20:29,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233013501] [2024-06-21 19:20:29,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:20:29,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:20:29,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:20:29,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:20:29,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:20:29,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-21 19:20:29,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 168 transitions, 1339 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:29,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:20:29,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-21 19:20:29,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:20:30,252 INFO L124 PetriNetUnfolderBase]: 363/759 cut-off events. [2024-06-21 19:20:30,252 INFO L125 PetriNetUnfolderBase]: For 76322/76322 co-relation queries the response was YES. [2024-06-21 19:20:30,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4142 conditions, 759 events. 363/759 cut-off events. For 76322/76322 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4192 event pairs, 54 based on Foata normal form. 6/764 useless extension candidates. Maximal degree in co-relation 4041. Up to 560 conditions per place. [2024-06-21 19:20:30,258 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 128 selfloop transitions, 40 changer transitions 10/182 dead transitions. [2024-06-21 19:20:30,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 182 transitions, 1739 flow [2024-06-21 19:20:30,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:20:30,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:20:30,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-21 19:20:30,259 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4310850439882698 [2024-06-21 19:20:30,259 INFO L175 Difference]: Start difference. First operand has 236 places, 168 transitions, 1339 flow. Second operand 11 states and 147 transitions. [2024-06-21 19:20:30,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 182 transitions, 1739 flow [2024-06-21 19:20:30,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 182 transitions, 1681 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-21 19:20:30,491 INFO L231 Difference]: Finished difference. Result has 234 places, 165 transitions, 1340 flow [2024-06-21 19:20:30,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1281, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1340, PETRI_PLACES=234, PETRI_TRANSITIONS=165} [2024-06-21 19:20:30,492 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 204 predicate places. [2024-06-21 19:20:30,492 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 165 transitions, 1340 flow [2024-06-21 19:20:30,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:30,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:20:30,492 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:20:30,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-21 19:20:30,492 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:20:30,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:20:30,493 INFO L85 PathProgramCache]: Analyzing trace with hash -209217955, now seen corresponding path program 11 times [2024-06-21 19:20:30,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:20:30,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138751035] [2024-06-21 19:20:30,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:20:30,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:20:30,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:20:32,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:20:32,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:20:32,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138751035] [2024-06-21 19:20:32,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138751035] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:20:32,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:20:32,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:20:32,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112011160] [2024-06-21 19:20:32,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:20:32,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:20:32,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:20:32,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:20:32,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:20:32,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-21 19:20:32,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 165 transitions, 1340 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:32,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:20:32,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-21 19:20:32,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:20:33,127 INFO L124 PetriNetUnfolderBase]: 364/758 cut-off events. [2024-06-21 19:20:33,127 INFO L125 PetriNetUnfolderBase]: For 88889/88889 co-relation queries the response was YES. [2024-06-21 19:20:33,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4215 conditions, 758 events. 364/758 cut-off events. For 88889/88889 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4186 event pairs, 85 based on Foata normal form. 10/767 useless extension candidates. Maximal degree in co-relation 4115. Up to 626 conditions per place. [2024-06-21 19:20:33,133 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 147 selfloop transitions, 21 changer transitions 7/179 dead transitions. [2024-06-21 19:20:33,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 179 transitions, 1776 flow [2024-06-21 19:20:33,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:20:33,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:20:33,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-21 19:20:33,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40762463343108507 [2024-06-21 19:20:33,134 INFO L175 Difference]: Start difference. First operand has 234 places, 165 transitions, 1340 flow. Second operand 11 states and 139 transitions. [2024-06-21 19:20:33,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 179 transitions, 1776 flow [2024-06-21 19:20:33,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 179 transitions, 1688 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-21 19:20:33,338 INFO L231 Difference]: Finished difference. Result has 230 places, 162 transitions, 1306 flow [2024-06-21 19:20:33,338 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1252, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1306, PETRI_PLACES=230, PETRI_TRANSITIONS=162} [2024-06-21 19:20:33,338 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 200 predicate places. [2024-06-21 19:20:33,338 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 162 transitions, 1306 flow [2024-06-21 19:20:33,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:33,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:20:33,339 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:20:33,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-21 19:20:33,339 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:20:33,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:20:33,339 INFO L85 PathProgramCache]: Analyzing trace with hash -120650303, now seen corresponding path program 12 times [2024-06-21 19:20:33,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:20:33,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792274660] [2024-06-21 19:20:33,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:20:33,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:20:33,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:20:35,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:20:35,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:20:35,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792274660] [2024-06-21 19:20:35,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792274660] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:20:35,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:20:35,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:20:35,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944277632] [2024-06-21 19:20:35,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:20:35,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:20:35,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:20:35,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:20:35,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:20:35,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-21 19:20:35,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 162 transitions, 1306 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:35,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:20:35,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-21 19:20:35,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:20:35,881 INFO L124 PetriNetUnfolderBase]: 361/750 cut-off events. [2024-06-21 19:20:35,881 INFO L125 PetriNetUnfolderBase]: For 87201/87201 co-relation queries the response was YES. [2024-06-21 19:20:35,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4201 conditions, 750 events. 361/750 cut-off events. For 87201/87201 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4141 event pairs, 62 based on Foata normal form. 10/758 useless extension candidates. Maximal degree in co-relation 4103. Up to 461 conditions per place. [2024-06-21 19:20:35,887 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 95 selfloop transitions, 69 changer transitions 6/174 dead transitions. [2024-06-21 19:20:35,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 174 transitions, 1728 flow [2024-06-21 19:20:35,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:20:35,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:20:35,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 145 transitions. [2024-06-21 19:20:35,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46774193548387094 [2024-06-21 19:20:35,888 INFO L175 Difference]: Start difference. First operand has 230 places, 162 transitions, 1306 flow. Second operand 10 states and 145 transitions. [2024-06-21 19:20:35,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 174 transitions, 1728 flow [2024-06-21 19:20:36,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 174 transitions, 1660 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-21 19:20:36,073 INFO L231 Difference]: Finished difference. Result has 231 places, 160 transitions, 1396 flow [2024-06-21 19:20:36,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1238, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1396, PETRI_PLACES=231, PETRI_TRANSITIONS=160} [2024-06-21 19:20:36,073 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 201 predicate places. [2024-06-21 19:20:36,073 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 160 transitions, 1396 flow [2024-06-21 19:20:36,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:36,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:20:36,073 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:20:36,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-21 19:20:36,073 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:20:36,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:20:36,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1848476097, now seen corresponding path program 13 times [2024-06-21 19:20:36,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:20:36,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843066122] [2024-06-21 19:20:36,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:20:36,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:20:36,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:20:37,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:20:37,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:20:37,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843066122] [2024-06-21 19:20:37,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843066122] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:20:37,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:20:37,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:20:37,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49726875] [2024-06-21 19:20:37,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:20:37,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:20:37,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:20:37,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:20:37,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:20:37,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-21 19:20:37,957 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 160 transitions, 1396 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:37,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:20:37,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-21 19:20:37,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:20:38,376 INFO L124 PetriNetUnfolderBase]: 360/751 cut-off events. [2024-06-21 19:20:38,376 INFO L125 PetriNetUnfolderBase]: For 89696/89696 co-relation queries the response was YES. [2024-06-21 19:20:38,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4322 conditions, 751 events. 360/751 cut-off events. For 89696/89696 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4143 event pairs, 64 based on Foata normal form. 10/758 useless extension candidates. Maximal degree in co-relation 4223. Up to 565 conditions per place. [2024-06-21 19:20:38,382 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 119 selfloop transitions, 43 changer transitions 6/172 dead transitions. [2024-06-21 19:20:38,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 172 transitions, 1816 flow [2024-06-21 19:20:38,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:20:38,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:20:38,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 140 transitions. [2024-06-21 19:20:38,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45161290322580644 [2024-06-21 19:20:38,383 INFO L175 Difference]: Start difference. First operand has 231 places, 160 transitions, 1396 flow. Second operand 10 states and 140 transitions. [2024-06-21 19:20:38,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 172 transitions, 1816 flow [2024-06-21 19:20:38,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 172 transitions, 1632 flow, removed 15 selfloop flow, removed 10 redundant places. [2024-06-21 19:20:38,557 INFO L231 Difference]: Finished difference. Result has 231 places, 158 transitions, 1320 flow [2024-06-21 19:20:38,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1212, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1320, PETRI_PLACES=231, PETRI_TRANSITIONS=158} [2024-06-21 19:20:38,557 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 201 predicate places. [2024-06-21 19:20:38,558 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 158 transitions, 1320 flow [2024-06-21 19:20:38,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:38,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:20:38,558 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:20:38,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-21 19:20:38,558 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:20:38,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:20:38,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1211586945, now seen corresponding path program 14 times [2024-06-21 19:20:38,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:20:38,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578448877] [2024-06-21 19:20:38,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:20:38,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:20:38,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:20:40,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:20:40,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:20:40,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578448877] [2024-06-21 19:20:40,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578448877] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:20:40,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:20:40,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:20:40,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621950339] [2024-06-21 19:20:40,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:20:40,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:20:40,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:20:40,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:20:40,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:20:40,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-21 19:20:40,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 158 transitions, 1320 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:40,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:20:40,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-21 19:20:40,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:20:41,214 INFO L124 PetriNetUnfolderBase]: 347/722 cut-off events. [2024-06-21 19:20:41,214 INFO L125 PetriNetUnfolderBase]: For 64191/64191 co-relation queries the response was YES. [2024-06-21 19:20:41,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4162 conditions, 722 events. 347/722 cut-off events. For 64191/64191 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 3941 event pairs, 62 based on Foata normal form. 2/721 useless extension candidates. Maximal degree in co-relation 4063. Up to 473 conditions per place. [2024-06-21 19:20:41,220 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 93 selfloop transitions, 70 changer transitions 0/167 dead transitions. [2024-06-21 19:20:41,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 167 transitions, 1698 flow [2024-06-21 19:20:41,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:20:41,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:20:41,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 140 transitions. [2024-06-21 19:20:41,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45161290322580644 [2024-06-21 19:20:41,221 INFO L175 Difference]: Start difference. First operand has 231 places, 158 transitions, 1320 flow. Second operand 10 states and 140 transitions. [2024-06-21 19:20:41,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 167 transitions, 1698 flow [2024-06-21 19:20:41,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 167 transitions, 1520 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-06-21 19:20:41,402 INFO L231 Difference]: Finished difference. Result has 231 places, 159 transitions, 1324 flow [2024-06-21 19:20:41,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1142, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1324, PETRI_PLACES=231, PETRI_TRANSITIONS=159} [2024-06-21 19:20:41,402 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 201 predicate places. [2024-06-21 19:20:41,402 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 159 transitions, 1324 flow [2024-06-21 19:20:41,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:41,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:20:41,403 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:20:41,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-21 19:20:41,403 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:20:41,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:20:41,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1211409315, now seen corresponding path program 15 times [2024-06-21 19:20:41,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:20:41,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537631610] [2024-06-21 19:20:41,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:20:41,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:20:41,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:20:43,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:20:43,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:20:43,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537631610] [2024-06-21 19:20:43,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537631610] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:20:43,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:20:43,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:20:43,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994888823] [2024-06-21 19:20:43,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:20:43,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:20:43,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:20:43,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:20:43,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:20:43,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-21 19:20:43,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 159 transitions, 1324 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:43,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:20:43,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-21 19:20:43,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:20:44,488 INFO L124 PetriNetUnfolderBase]: 351/732 cut-off events. [2024-06-21 19:20:44,488 INFO L125 PetriNetUnfolderBase]: For 65794/65794 co-relation queries the response was YES. [2024-06-21 19:20:44,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4208 conditions, 732 events. 351/732 cut-off events. For 65794/65794 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 3994 event pairs, 60 based on Foata normal form. 2/731 useless extension candidates. Maximal degree in co-relation 4109. Up to 455 conditions per place. [2024-06-21 19:20:44,493 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 92 selfloop transitions, 73 changer transitions 0/169 dead transitions. [2024-06-21 19:20:44,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 169 transitions, 1710 flow [2024-06-21 19:20:44,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:20:44,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:20:44,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 141 transitions. [2024-06-21 19:20:44,494 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45483870967741935 [2024-06-21 19:20:44,494 INFO L175 Difference]: Start difference. First operand has 231 places, 159 transitions, 1324 flow. Second operand 10 states and 141 transitions. [2024-06-21 19:20:44,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 169 transitions, 1710 flow [2024-06-21 19:20:44,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 169 transitions, 1538 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-21 19:20:44,680 INFO L231 Difference]: Finished difference. Result has 233 places, 160 transitions, 1342 flow [2024-06-21 19:20:44,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1152, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1342, PETRI_PLACES=233, PETRI_TRANSITIONS=160} [2024-06-21 19:20:44,680 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 203 predicate places. [2024-06-21 19:20:44,680 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 160 transitions, 1342 flow [2024-06-21 19:20:44,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:44,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:20:44,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:20:44,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-21 19:20:44,681 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:20:44,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:20:44,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1620574947, now seen corresponding path program 16 times [2024-06-21 19:20:44,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:20:44,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351107298] [2024-06-21 19:20:44,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:20:44,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:20:44,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:20:46,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:20:46,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:20:46,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351107298] [2024-06-21 19:20:46,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351107298] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:20:46,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:20:46,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:20:46,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457288381] [2024-06-21 19:20:46,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:20:46,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:20:46,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:20:46,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:20:46,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:20:46,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-21 19:20:46,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 160 transitions, 1342 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:46,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:20:46,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-21 19:20:46,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:20:47,432 INFO L124 PetriNetUnfolderBase]: 355/740 cut-off events. [2024-06-21 19:20:47,432 INFO L125 PetriNetUnfolderBase]: For 67479/67479 co-relation queries the response was YES. [2024-06-21 19:20:47,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4275 conditions, 740 events. 355/740 cut-off events. For 67479/67479 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 4050 event pairs, 64 based on Foata normal form. 2/739 useless extension candidates. Maximal degree in co-relation 4175. Up to 589 conditions per place. [2024-06-21 19:20:47,437 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 122 selfloop transitions, 43 changer transitions 0/169 dead transitions. [2024-06-21 19:20:47,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 169 transitions, 1728 flow [2024-06-21 19:20:47,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:20:47,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:20:47,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 137 transitions. [2024-06-21 19:20:47,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44193548387096776 [2024-06-21 19:20:47,438 INFO L175 Difference]: Start difference. First operand has 233 places, 160 transitions, 1342 flow. Second operand 10 states and 137 transitions. [2024-06-21 19:20:47,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 169 transitions, 1728 flow [2024-06-21 19:20:47,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 169 transitions, 1548 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-21 19:20:47,633 INFO L231 Difference]: Finished difference. Result has 235 places, 161 transitions, 1294 flow [2024-06-21 19:20:47,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1162, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1294, PETRI_PLACES=235, PETRI_TRANSITIONS=161} [2024-06-21 19:20:47,633 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 205 predicate places. [2024-06-21 19:20:47,633 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 161 transitions, 1294 flow [2024-06-21 19:20:47,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:47,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:20:47,634 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:20:47,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-21 19:20:47,634 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:20:47,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:20:47,634 INFO L85 PathProgramCache]: Analyzing trace with hash 551535489, now seen corresponding path program 17 times [2024-06-21 19:20:47,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:20:47,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036803791] [2024-06-21 19:20:47,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:20:47,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:20:47,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:20:49,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:20:49,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:20:49,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036803791] [2024-06-21 19:20:49,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036803791] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:20:49,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:20:49,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:20:49,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789595478] [2024-06-21 19:20:49,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:20:49,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:20:49,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:20:49,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:20:49,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:20:49,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-21 19:20:49,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 161 transitions, 1294 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:49,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:20:49,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-21 19:20:49,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:20:50,469 INFO L124 PetriNetUnfolderBase]: 359/748 cut-off events. [2024-06-21 19:20:50,470 INFO L125 PetriNetUnfolderBase]: For 69087/69087 co-relation queries the response was YES. [2024-06-21 19:20:50,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4262 conditions, 748 events. 359/748 cut-off events. For 69087/69087 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4121 event pairs, 64 based on Foata normal form. 2/747 useless extension candidates. Maximal degree in co-relation 4161. Up to 577 conditions per place. [2024-06-21 19:20:50,475 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 122 selfloop transitions, 45 changer transitions 0/171 dead transitions. [2024-06-21 19:20:50,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 171 transitions, 1688 flow [2024-06-21 19:20:50,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:20:50,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:20:50,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 138 transitions. [2024-06-21 19:20:50,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44516129032258067 [2024-06-21 19:20:50,476 INFO L175 Difference]: Start difference. First operand has 235 places, 161 transitions, 1294 flow. Second operand 10 states and 138 transitions. [2024-06-21 19:20:50,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 171 transitions, 1688 flow [2024-06-21 19:20:50,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 171 transitions, 1566 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-21 19:20:50,687 INFO L231 Difference]: Finished difference. Result has 237 places, 162 transitions, 1310 flow [2024-06-21 19:20:50,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1172, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1310, PETRI_PLACES=237, PETRI_TRANSITIONS=162} [2024-06-21 19:20:50,688 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 207 predicate places. [2024-06-21 19:20:50,688 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 162 transitions, 1310 flow [2024-06-21 19:20:50,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:50,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:20:50,688 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:20:50,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-21 19:20:50,688 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:20:50,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:20:50,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1331852705, now seen corresponding path program 18 times [2024-06-21 19:20:50,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:20:50,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318791246] [2024-06-21 19:20:50,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:20:50,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:20:50,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:20:52,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:20:52,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:20:52,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318791246] [2024-06-21 19:20:52,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318791246] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:20:52,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:20:52,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:20:52,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151419500] [2024-06-21 19:20:52,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:20:52,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:20:52,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:20:52,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:20:52,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:20:52,730 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-21 19:20:52,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 162 transitions, 1310 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:52,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:20:52,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-21 19:20:52,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:20:53,106 INFO L124 PetriNetUnfolderBase]: 400/835 cut-off events. [2024-06-21 19:20:53,106 INFO L125 PetriNetUnfolderBase]: For 126399/126399 co-relation queries the response was YES. [2024-06-21 19:20:53,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5601 conditions, 835 events. 400/835 cut-off events. For 126399/126399 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4712 event pairs, 83 based on Foata normal form. 8/840 useless extension candidates. Maximal degree in co-relation 5499. Up to 611 conditions per place. [2024-06-21 19:20:53,112 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 139 selfloop transitions, 29 changer transitions 7/179 dead transitions. [2024-06-21 19:20:53,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 179 transitions, 1996 flow [2024-06-21 19:20:53,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:20:53,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:20:53,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 141 transitions. [2024-06-21 19:20:53,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45483870967741935 [2024-06-21 19:20:53,113 INFO L175 Difference]: Start difference. First operand has 237 places, 162 transitions, 1310 flow. Second operand 10 states and 141 transitions. [2024-06-21 19:20:53,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 179 transitions, 1996 flow [2024-06-21 19:20:53,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 179 transitions, 1868 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-21 19:20:53,457 INFO L231 Difference]: Finished difference. Result has 239 places, 160 transitions, 1231 flow [2024-06-21 19:20:53,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1182, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1231, PETRI_PLACES=239, PETRI_TRANSITIONS=160} [2024-06-21 19:20:53,458 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 209 predicate places. [2024-06-21 19:20:53,458 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 160 transitions, 1231 flow [2024-06-21 19:20:53,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:53,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:20:53,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:20:53,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-21 19:20:53,458 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:20:53,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:20:53,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1331675075, now seen corresponding path program 19 times [2024-06-21 19:20:53,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:20:53,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296025995] [2024-06-21 19:20:53,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:20:53,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:20:53,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:20:55,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:20:55,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:20:55,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296025995] [2024-06-21 19:20:55,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296025995] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:20:55,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:20:55,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:20:55,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773863980] [2024-06-21 19:20:55,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:20:55,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:20:55,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:20:55,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:20:55,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:20:55,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-21 19:20:55,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 160 transitions, 1231 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:55,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:20:55,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-21 19:20:55,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:20:55,966 INFO L124 PetriNetUnfolderBase]: 379/792 cut-off events. [2024-06-21 19:20:55,966 INFO L125 PetriNetUnfolderBase]: For 101315/101315 co-relation queries the response was YES. [2024-06-21 19:20:55,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5082 conditions, 792 events. 379/792 cut-off events. For 101315/101315 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4427 event pairs, 78 based on Foata normal form. 2/791 useless extension candidates. Maximal degree in co-relation 4979. Up to 668 conditions per place. [2024-06-21 19:20:55,973 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 135 selfloop transitions, 30 changer transitions 0/169 dead transitions. [2024-06-21 19:20:55,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 169 transitions, 1621 flow [2024-06-21 19:20:55,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:20:55,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:20:55,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-21 19:20:55,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42258064516129035 [2024-06-21 19:20:55,974 INFO L175 Difference]: Start difference. First operand has 239 places, 160 transitions, 1231 flow. Second operand 10 states and 131 transitions. [2024-06-21 19:20:55,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 169 transitions, 1621 flow [2024-06-21 19:20:56,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 169 transitions, 1562 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-21 19:20:56,259 INFO L231 Difference]: Finished difference. Result has 238 places, 161 transitions, 1282 flow [2024-06-21 19:20:56,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1172, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1282, PETRI_PLACES=238, PETRI_TRANSITIONS=161} [2024-06-21 19:20:56,259 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 208 predicate places. [2024-06-21 19:20:56,259 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 161 transitions, 1282 flow [2024-06-21 19:20:56,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:56,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:20:56,260 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:20:56,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-21 19:20:56,260 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:20:56,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:20:56,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1336436675, now seen corresponding path program 20 times [2024-06-21 19:20:56,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:20:56,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870853026] [2024-06-21 19:20:56,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:20:56,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:20:56,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:20:57,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:20:57,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:20:57,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870853026] [2024-06-21 19:20:57,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870853026] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:20:57,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:20:57,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:20:57,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519376844] [2024-06-21 19:20:57,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:20:57,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:20:57,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:20:57,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:20:57,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:20:58,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-21 19:20:58,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 161 transitions, 1282 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:58,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:20:58,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-21 19:20:58,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:20:58,458 INFO L124 PetriNetUnfolderBase]: 384/807 cut-off events. [2024-06-21 19:20:58,459 INFO L125 PetriNetUnfolderBase]: For 112269/112269 co-relation queries the response was YES. [2024-06-21 19:20:58,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4915 conditions, 807 events. 384/807 cut-off events. For 112269/112269 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 4518 event pairs, 73 based on Foata normal form. 8/812 useless extension candidates. Maximal degree in co-relation 4813. Up to 649 conditions per place. [2024-06-21 19:20:58,465 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 132 selfloop transitions, 25 changer transitions 12/173 dead transitions. [2024-06-21 19:20:58,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 173 transitions, 1658 flow [2024-06-21 19:20:58,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:20:58,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:20:58,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 134 transitions. [2024-06-21 19:20:58,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.432258064516129 [2024-06-21 19:20:58,465 INFO L175 Difference]: Start difference. First operand has 238 places, 161 transitions, 1282 flow. Second operand 10 states and 134 transitions. [2024-06-21 19:20:58,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 173 transitions, 1658 flow [2024-06-21 19:20:58,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 173 transitions, 1558 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-21 19:20:58,780 INFO L231 Difference]: Finished difference. Result has 240 places, 157 transitions, 1173 flow [2024-06-21 19:20:58,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1182, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1173, PETRI_PLACES=240, PETRI_TRANSITIONS=157} [2024-06-21 19:20:58,780 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 210 predicate places. [2024-06-21 19:20:58,780 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 157 transitions, 1173 flow [2024-06-21 19:20:58,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:58,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:20:58,781 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:20:58,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-21 19:20:58,781 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:20:58,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:20:58,781 INFO L85 PathProgramCache]: Analyzing trace with hash 551134045, now seen corresponding path program 5 times [2024-06-21 19:20:58,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:20:58,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409674097] [2024-06-21 19:20:58,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:20:58,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:20:58,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:21:01,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:21:01,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:21:01,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409674097] [2024-06-21 19:21:01,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409674097] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:21:01,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:21:01,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:21:01,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142878848] [2024-06-21 19:21:01,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:21:01,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:21:01,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:21:01,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:21:01,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:21:01,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-21 19:21:01,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 157 transitions, 1173 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:21:01,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:21:01,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-21 19:21:01,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:21:02,029 INFO L124 PetriNetUnfolderBase]: 392/832 cut-off events. [2024-06-21 19:21:02,029 INFO L125 PetriNetUnfolderBase]: For 139208/139208 co-relation queries the response was YES. [2024-06-21 19:21:02,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5581 conditions, 832 events. 392/832 cut-off events. For 139208/139208 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4763 event pairs, 108 based on Foata normal form. 6/837 useless extension candidates. Maximal degree in co-relation 5478. Up to 665 conditions per place. [2024-06-21 19:21:02,035 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 146 selfloop transitions, 18 changer transitions 7/175 dead transitions. [2024-06-21 19:21:02,036 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 175 transitions, 1773 flow [2024-06-21 19:21:02,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:21:02,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:21:02,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 151 transitions. [2024-06-21 19:21:02,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40591397849462363 [2024-06-21 19:21:02,036 INFO L175 Difference]: Start difference. First operand has 240 places, 157 transitions, 1173 flow. Second operand 12 states and 151 transitions. [2024-06-21 19:21:02,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 175 transitions, 1773 flow [2024-06-21 19:21:02,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 175 transitions, 1610 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-21 19:21:02,417 INFO L231 Difference]: Finished difference. Result has 235 places, 154 transitions, 1038 flow [2024-06-21 19:21:02,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1016, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1038, PETRI_PLACES=235, PETRI_TRANSITIONS=154} [2024-06-21 19:21:02,417 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 205 predicate places. [2024-06-21 19:21:02,417 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 154 transitions, 1038 flow [2024-06-21 19:21:02,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:21:02,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:21:02,417 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:21:02,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-21 19:21:02,418 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:21:02,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:21:02,418 INFO L85 PathProgramCache]: Analyzing trace with hash -759062141, now seen corresponding path program 6 times [2024-06-21 19:21:02,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:21:02,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847799050] [2024-06-21 19:21:02,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:21:02,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:21:02,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:21:04,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:21:04,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:21:04,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847799050] [2024-06-21 19:21:04,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847799050] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:21:04,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:21:04,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:21:04,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51732034] [2024-06-21 19:21:04,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:21:04,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:21:04,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:21:04,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:21:04,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:21:05,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-21 19:21:05,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 154 transitions, 1038 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:21:05,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:21:05,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-21 19:21:05,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:21:05,764 INFO L124 PetriNetUnfolderBase]: 367/779 cut-off events. [2024-06-21 19:21:05,764 INFO L125 PetriNetUnfolderBase]: For 110997/110997 co-relation queries the response was YES. [2024-06-21 19:21:05,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4457 conditions, 779 events. 367/779 cut-off events. For 110997/110997 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 4345 event pairs, 98 based on Foata normal form. 8/786 useless extension candidates. Maximal degree in co-relation 4358. Up to 665 conditions per place. [2024-06-21 19:21:05,769 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 139 selfloop transitions, 16 changer transitions 9/168 dead transitions. [2024-06-21 19:21:05,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 168 transitions, 1424 flow [2024-06-21 19:21:05,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:21:05,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:21:05,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 146 transitions. [2024-06-21 19:21:05,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3924731182795699 [2024-06-21 19:21:05,770 INFO L175 Difference]: Start difference. First operand has 235 places, 154 transitions, 1038 flow. Second operand 12 states and 146 transitions. [2024-06-21 19:21:05,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 168 transitions, 1424 flow [2024-06-21 19:21:06,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 168 transitions, 1380 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-21 19:21:06,060 INFO L231 Difference]: Finished difference. Result has 232 places, 151 transitions, 1013 flow [2024-06-21 19:21:06,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=996, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1013, PETRI_PLACES=232, PETRI_TRANSITIONS=151} [2024-06-21 19:21:06,060 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 202 predicate places. [2024-06-21 19:21:06,060 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 151 transitions, 1013 flow [2024-06-21 19:21:06,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:21:06,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:21:06,060 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:21:06,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-21 19:21:06,061 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:21:06,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:21:06,061 INFO L85 PathProgramCache]: Analyzing trace with hash 828190345, now seen corresponding path program 7 times [2024-06-21 19:21:06,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:21:06,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623063199] [2024-06-21 19:21:06,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:21:06,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:21:06,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:21:08,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:21:08,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:21:08,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623063199] [2024-06-21 19:21:08,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623063199] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:21:08,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:21:08,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:21:08,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114487846] [2024-06-21 19:21:08,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:21:08,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:21:08,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:21:08,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:21:08,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:21:08,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-21 19:21:08,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 151 transitions, 1013 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:21:08,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:21:08,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-21 19:21:08,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:21:09,176 INFO L124 PetriNetUnfolderBase]: 358/768 cut-off events. [2024-06-21 19:21:09,176 INFO L125 PetriNetUnfolderBase]: For 98779/98779 co-relation queries the response was YES. [2024-06-21 19:21:09,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4323 conditions, 768 events. 358/768 cut-off events. For 98779/98779 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 4309 event pairs, 94 based on Foata normal form. 6/773 useless extension candidates. Maximal degree in co-relation 4226. Up to 655 conditions per place. [2024-06-21 19:21:09,183 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 138 selfloop transitions, 14 changer transitions 10/166 dead transitions. [2024-06-21 19:21:09,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 166 transitions, 1383 flow [2024-06-21 19:21:09,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 19:21:09,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 19:21:09,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 154 transitions. [2024-06-21 19:21:09,184 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38213399503722084 [2024-06-21 19:21:09,184 INFO L175 Difference]: Start difference. First operand has 232 places, 151 transitions, 1013 flow. Second operand 13 states and 154 transitions. [2024-06-21 19:21:09,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 166 transitions, 1383 flow [2024-06-21 19:21:09,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 166 transitions, 1347 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-21 19:21:09,449 INFO L231 Difference]: Finished difference. Result has 230 places, 148 transitions, 990 flow [2024-06-21 19:21:09,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=977, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=990, PETRI_PLACES=230, PETRI_TRANSITIONS=148} [2024-06-21 19:21:09,449 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 200 predicate places. [2024-06-21 19:21:09,450 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 148 transitions, 990 flow [2024-06-21 19:21:09,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:21:09,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:21:09,450 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:21:09,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-21 19:21:09,450 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:21:09,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:21:09,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1448065919, now seen corresponding path program 8 times [2024-06-21 19:21:09,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:21:09,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126563262] [2024-06-21 19:21:09,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:21:09,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:21:09,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:21:12,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:21:12,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:21:12,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126563262] [2024-06-21 19:21:12,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126563262] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:21:12,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:21:12,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:21:12,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073363518] [2024-06-21 19:21:12,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:21:12,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:21:12,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:21:12,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:21:12,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:21:12,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-21 19:21:12,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 148 transitions, 990 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:21:12,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:21:12,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-21 19:21:12,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:21:13,390 INFO L124 PetriNetUnfolderBase]: 373/792 cut-off events. [2024-06-21 19:21:13,390 INFO L125 PetriNetUnfolderBase]: For 124281/124281 co-relation queries the response was YES. [2024-06-21 19:21:13,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5089 conditions, 792 events. 373/792 cut-off events. For 124281/124281 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 4464 event pairs, 83 based on Foata normal form. 6/795 useless extension candidates. Maximal degree in co-relation 4993. Up to 515 conditions per place. [2024-06-21 19:21:13,395 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 103 selfloop transitions, 50 changer transitions 7/164 dead transitions. [2024-06-21 19:21:13,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 164 transitions, 1550 flow [2024-06-21 19:21:13,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:21:13,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:21:13,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 154 transitions. [2024-06-21 19:21:13,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45161290322580644 [2024-06-21 19:21:13,396 INFO L175 Difference]: Start difference. First operand has 230 places, 148 transitions, 990 flow. Second operand 11 states and 154 transitions. [2024-06-21 19:21:13,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 164 transitions, 1550 flow [2024-06-21 19:21:13,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 164 transitions, 1506 flow, removed 8 selfloop flow, removed 12 redundant places. [2024-06-21 19:21:13,639 INFO L231 Difference]: Finished difference. Result has 224 places, 145 transitions, 1040 flow [2024-06-21 19:21:13,639 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=954, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1040, PETRI_PLACES=224, PETRI_TRANSITIONS=145} [2024-06-21 19:21:13,639 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 194 predicate places. [2024-06-21 19:21:13,640 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 145 transitions, 1040 flow [2024-06-21 19:21:13,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:21:13,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:21:13,640 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:21:13,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-21 19:21:13,640 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:21:13,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:21:13,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1159178241, now seen corresponding path program 9 times [2024-06-21 19:21:13,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:21:13,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812837793] [2024-06-21 19:21:13,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:21:13,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:21:13,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:21:16,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:21:16,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:21:16,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812837793] [2024-06-21 19:21:16,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812837793] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:21:16,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:21:16,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:21:16,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973629562] [2024-06-21 19:21:16,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:21:16,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:21:16,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:21:16,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:21:16,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:21:16,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-21 19:21:16,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 145 transitions, 1040 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:21:16,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:21:16,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-21 19:21:16,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:21:16,958 INFO L124 PetriNetUnfolderBase]: 370/785 cut-off events. [2024-06-21 19:21:16,958 INFO L125 PetriNetUnfolderBase]: For 126037/126037 co-relation queries the response was YES. [2024-06-21 19:21:16,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5069 conditions, 785 events. 370/785 cut-off events. For 126037/126037 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 4426 event pairs, 89 based on Foata normal form. 8/790 useless extension candidates. Maximal degree in co-relation 4975. Up to 612 conditions per place. [2024-06-21 19:21:16,963 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 107 selfloop transitions, 37 changer transitions 9/157 dead transitions. [2024-06-21 19:21:16,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 157 transitions, 1394 flow [2024-06-21 19:21:16,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:21:16,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:21:16,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 149 transitions. [2024-06-21 19:21:16,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.436950146627566 [2024-06-21 19:21:16,964 INFO L175 Difference]: Start difference. First operand has 224 places, 145 transitions, 1040 flow. Second operand 11 states and 149 transitions. [2024-06-21 19:21:16,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 157 transitions, 1394 flow [2024-06-21 19:21:17,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 157 transitions, 1288 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-21 19:21:17,204 INFO L231 Difference]: Finished difference. Result has 221 places, 142 transitions, 997 flow [2024-06-21 19:21:17,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=936, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=997, PETRI_PLACES=221, PETRI_TRANSITIONS=142} [2024-06-21 19:21:17,204 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 191 predicate places. [2024-06-21 19:21:17,205 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 142 transitions, 997 flow [2024-06-21 19:21:17,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:21:17,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:21:17,205 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:21:17,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-21 19:21:17,205 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:21:17,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:21:17,205 INFO L85 PathProgramCache]: Analyzing trace with hash 2028174173, now seen corresponding path program 10 times [2024-06-21 19:21:17,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:21:17,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577603446] [2024-06-21 19:21:17,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:21:17,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:21:17,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:21:19,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:21:19,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:21:19,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577603446] [2024-06-21 19:21:19,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577603446] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:21:19,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:21:19,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:21:19,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524902499] [2024-06-21 19:21:19,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:21:19,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:21:19,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:21:19,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:21:19,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:21:19,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-21 19:21:19,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 142 transitions, 997 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:21:19,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:21:19,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-21 19:21:19,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:21:20,229 INFO L124 PetriNetUnfolderBase]: 361/781 cut-off events. [2024-06-21 19:21:20,229 INFO L125 PetriNetUnfolderBase]: For 113397/113397 co-relation queries the response was YES. [2024-06-21 19:21:20,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4914 conditions, 781 events. 361/781 cut-off events. For 113397/113397 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4391 event pairs, 104 based on Foata normal form. 6/786 useless extension candidates. Maximal degree in co-relation 4822. Up to 663 conditions per place. [2024-06-21 19:21:20,235 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 129 selfloop transitions, 12 changer transitions 13/158 dead transitions. [2024-06-21 19:21:20,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 158 transitions, 1353 flow [2024-06-21 19:21:20,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 19:21:20,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 19:21:20,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 153 transitions. [2024-06-21 19:21:20,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37965260545905705 [2024-06-21 19:21:20,236 INFO L175 Difference]: Start difference. First operand has 221 places, 142 transitions, 997 flow. Second operand 13 states and 153 transitions. [2024-06-21 19:21:20,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 158 transitions, 1353 flow [2024-06-21 19:21:20,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 158 transitions, 1275 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-21 19:21:20,473 INFO L231 Difference]: Finished difference. Result has 221 places, 138 transitions, 923 flow [2024-06-21 19:21:20,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=919, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=923, PETRI_PLACES=221, PETRI_TRANSITIONS=138} [2024-06-21 19:21:20,474 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 191 predicate places. [2024-06-21 19:21:20,474 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 138 transitions, 923 flow [2024-06-21 19:21:20,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:21:20,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:21:20,474 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:21:20,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-21 19:21:20,474 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:21:20,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:21:20,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1439495039, now seen corresponding path program 11 times [2024-06-21 19:21:20,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:21:20,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041866205] [2024-06-21 19:21:20,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:21:20,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:21:20,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:21:23,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:21:23,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:21:23,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041866205] [2024-06-21 19:21:23,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041866205] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:21:23,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:21:23,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:21:23,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532205481] [2024-06-21 19:21:23,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:21:23,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:21:23,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:21:23,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:21:23,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:21:23,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-21 19:21:23,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 138 transitions, 923 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:21:23,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:21:23,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-21 19:21:23,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:21:24,309 INFO L124 PetriNetUnfolderBase]: 354/757 cut-off events. [2024-06-21 19:21:24,309 INFO L125 PetriNetUnfolderBase]: For 117273/117273 co-relation queries the response was YES. [2024-06-21 19:21:24,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4790 conditions, 757 events. 354/757 cut-off events. For 117273/117273 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4198 event pairs, 87 based on Foata normal form. 8/763 useless extension candidates. Maximal degree in co-relation 4699. Up to 514 conditions per place. [2024-06-21 19:21:24,315 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 88 selfloop transitions, 49 changer transitions 9/150 dead transitions. [2024-06-21 19:21:24,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 150 transitions, 1261 flow [2024-06-21 19:21:24,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:21:24,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:21:24,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 150 transitions. [2024-06-21 19:21:24,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4398826979472141 [2024-06-21 19:21:24,316 INFO L175 Difference]: Start difference. First operand has 221 places, 138 transitions, 923 flow. Second operand 11 states and 150 transitions. [2024-06-21 19:21:24,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 150 transitions, 1261 flow [2024-06-21 19:21:24,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 150 transitions, 1225 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-21 19:21:24,554 INFO L231 Difference]: Finished difference. Result has 213 places, 135 transitions, 972 flow [2024-06-21 19:21:24,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=889, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=972, PETRI_PLACES=213, PETRI_TRANSITIONS=135} [2024-06-21 19:21:24,555 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 183 predicate places. [2024-06-21 19:21:24,555 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 135 transitions, 972 flow [2024-06-21 19:21:24,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:21:24,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:21:24,555 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:21:24,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-21 19:21:24,555 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:21:24,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:21:24,555 INFO L85 PathProgramCache]: Analyzing trace with hash 36417917, now seen corresponding path program 12 times [2024-06-21 19:21:24,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:21:24,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968785150] [2024-06-21 19:21:24,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:21:24,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:21:24,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:21:26,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:21:26,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:21:26,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968785150] [2024-06-21 19:21:26,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968785150] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:21:26,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:21:26,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:21:26,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940589832] [2024-06-21 19:21:26,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:21:26,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:21:26,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:21:26,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:21:26,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:21:27,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-21 19:21:27,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 135 transitions, 972 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:21:27,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:21:27,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-21 19:21:27,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:21:27,693 INFO L124 PetriNetUnfolderBase]: 375/808 cut-off events. [2024-06-21 19:21:27,693 INFO L125 PetriNetUnfolderBase]: For 137143/137143 co-relation queries the response was YES. [2024-06-21 19:21:27,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5765 conditions, 808 events. 375/808 cut-off events. For 137143/137143 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4549 event pairs, 105 based on Foata normal form. 6/811 useless extension candidates. Maximal degree in co-relation 5677. Up to 540 conditions per place. [2024-06-21 19:21:27,699 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 103 selfloop transitions, 37 changer transitions 7/151 dead transitions. [2024-06-21 19:21:27,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 151 transitions, 1484 flow [2024-06-21 19:21:27,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:21:27,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:21:27,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 151 transitions. [2024-06-21 19:21:27,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44281524926686217 [2024-06-21 19:21:27,700 INFO L175 Difference]: Start difference. First operand has 213 places, 135 transitions, 972 flow. Second operand 11 states and 151 transitions. [2024-06-21 19:21:27,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 151 transitions, 1484 flow [2024-06-21 19:21:27,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 151 transitions, 1378 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-21 19:21:27,969 INFO L231 Difference]: Finished difference. Result has 211 places, 132 transitions, 930 flow [2024-06-21 19:21:27,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=870, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=930, PETRI_PLACES=211, PETRI_TRANSITIONS=132} [2024-06-21 19:21:27,969 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 181 predicate places. [2024-06-21 19:21:27,969 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 132 transitions, 930 flow [2024-06-21 19:21:27,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:21:27,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:21:27,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:21:27,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-21 19:21:27,970 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:21:27,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:21:27,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1211593889, now seen corresponding path program 13 times [2024-06-21 19:21:27,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:21:27,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285805324] [2024-06-21 19:21:27,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:21:27,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:21:27,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:21:31,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:21:31,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:21:31,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285805324] [2024-06-21 19:21:31,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285805324] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:21:31,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:21:31,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:21:31,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691543332] [2024-06-21 19:21:31,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:21:31,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:21:31,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:21:31,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:21:31,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:21:31,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-21 19:21:31,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 132 transitions, 930 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:21:31,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:21:31,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-21 19:21:31,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:21:32,552 INFO L124 PetriNetUnfolderBase]: 350/753 cut-off events. [2024-06-21 19:21:32,552 INFO L125 PetriNetUnfolderBase]: For 117277/117277 co-relation queries the response was YES. [2024-06-21 19:21:32,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4930 conditions, 753 events. 350/753 cut-off events. For 117277/117277 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 4160 event pairs, 97 based on Foata normal form. 8/758 useless extension candidates. Maximal degree in co-relation 4843. Up to 508 conditions per place. [2024-06-21 19:21:32,558 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 81 selfloop transitions, 50 changer transitions 9/144 dead transitions. [2024-06-21 19:21:32,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 144 transitions, 1254 flow [2024-06-21 19:21:32,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:21:32,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:21:32,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 148 transitions. [2024-06-21 19:21:32,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4340175953079179 [2024-06-21 19:21:32,559 INFO L175 Difference]: Start difference. First operand has 211 places, 132 transitions, 930 flow. Second operand 11 states and 148 transitions. [2024-06-21 19:21:32,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 144 transitions, 1254 flow [2024-06-21 19:21:32,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 144 transitions, 1174 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-21 19:21:32,768 INFO L231 Difference]: Finished difference. Result has 208 places, 129 transitions, 937 flow [2024-06-21 19:21:32,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=852, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=937, PETRI_PLACES=208, PETRI_TRANSITIONS=129} [2024-06-21 19:21:32,769 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 178 predicate places. [2024-06-21 19:21:32,769 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 129 transitions, 937 flow [2024-06-21 19:21:32,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:21:32,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:21:32,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:21:32,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-21 19:21:32,769 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:21:32,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:21:32,769 INFO L85 PathProgramCache]: Analyzing trace with hash 551720063, now seen corresponding path program 14 times [2024-06-21 19:21:32,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:21:32,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469515643] [2024-06-21 19:21:32,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:21:32,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:21:32,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:21:35,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:21:35,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:21:35,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469515643] [2024-06-21 19:21:35,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469515643] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:21:35,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:21:35,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:21:35,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771463287] [2024-06-21 19:21:35,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:21:35,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:21:35,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:21:35,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:21:35,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:21:35,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-21 19:21:35,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 129 transitions, 937 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:21:35,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:21:35,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-21 19:21:35,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:21:36,328 INFO L124 PetriNetUnfolderBase]: 323/700 cut-off events. [2024-06-21 19:21:36,328 INFO L125 PetriNetUnfolderBase]: For 91127/91127 co-relation queries the response was YES. [2024-06-21 19:21:36,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4100 conditions, 700 events. 323/700 cut-off events. For 91127/91127 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3793 event pairs, 85 based on Foata normal form. 8/705 useless extension candidates. Maximal degree in co-relation 4015. Up to 537 conditions per place. [2024-06-21 19:21:36,334 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 95 selfloop transitions, 33 changer transitions 9/141 dead transitions. [2024-06-21 19:21:36,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 141 transitions, 1253 flow [2024-06-21 19:21:36,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:21:36,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:21:36,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 149 transitions. [2024-06-21 19:21:36,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.436950146627566 [2024-06-21 19:21:36,335 INFO L175 Difference]: Start difference. First operand has 208 places, 129 transitions, 937 flow. Second operand 11 states and 149 transitions. [2024-06-21 19:21:36,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 141 transitions, 1253 flow [2024-06-21 19:21:36,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 141 transitions, 1149 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-21 19:21:36,501 INFO L231 Difference]: Finished difference. Result has 205 places, 126 transitions, 884 flow [2024-06-21 19:21:36,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=833, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=884, PETRI_PLACES=205, PETRI_TRANSITIONS=126} [2024-06-21 19:21:36,501 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 175 predicate places. [2024-06-21 19:21:36,501 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 126 transitions, 884 flow [2024-06-21 19:21:36,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:21:36,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:21:36,502 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:21:36,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-21 19:21:36,502 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:21:36,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:21:36,502 INFO L85 PathProgramCache]: Analyzing trace with hash -262806303, now seen corresponding path program 15 times [2024-06-21 19:21:36,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:21:36,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102732478] [2024-06-21 19:21:36,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:21:36,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:21:36,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:21:38,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:21:38,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:21:38,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102732478] [2024-06-21 19:21:38,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102732478] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:21:38,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:21:38,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:21:38,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80834126] [2024-06-21 19:21:38,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:21:38,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:21:38,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:21:38,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:21:38,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:21:39,162 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-21 19:21:39,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 126 transitions, 884 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:21:39,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:21:39,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-21 19:21:39,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:21:39,595 INFO L124 PetriNetUnfolderBase]: 296/647 cut-off events. [2024-06-21 19:21:39,595 INFO L125 PetriNetUnfolderBase]: For 67057/67057 co-relation queries the response was YES. [2024-06-21 19:21:39,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3287 conditions, 647 events. 296/647 cut-off events. For 67057/67057 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3437 event pairs, 73 based on Foata normal form. 8/652 useless extension candidates. Maximal degree in co-relation 3203. Up to 502 conditions per place. [2024-06-21 19:21:39,600 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 97 selfloop transitions, 27 changer transitions 9/137 dead transitions. [2024-06-21 19:21:39,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 137 transitions, 1176 flow [2024-06-21 19:21:39,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:21:39,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:21:39,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-21 19:21:39,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4222873900293255 [2024-06-21 19:21:39,601 INFO L175 Difference]: Start difference. First operand has 205 places, 126 transitions, 884 flow. Second operand 11 states and 144 transitions. [2024-06-21 19:21:39,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 137 transitions, 1176 flow [2024-06-21 19:21:39,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 137 transitions, 1104 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-21 19:21:39,743 INFO L231 Difference]: Finished difference. Result has 203 places, 122 transitions, 835 flow [2024-06-21 19:21:39,743 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=812, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=835, PETRI_PLACES=203, PETRI_TRANSITIONS=122} [2024-06-21 19:21:39,743 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 173 predicate places. [2024-06-21 19:21:39,743 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 122 transitions, 835 flow [2024-06-21 19:21:39,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:21:39,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:21:39,744 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:21:39,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-21 19:21:39,744 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:21:39,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:21:39,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1196184084, now seen corresponding path program 1 times [2024-06-21 19:21:39,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:21:39,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242269489] [2024-06-21 19:21:39,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:21:39,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:21:39,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:21:42,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:21:42,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:21:42,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242269489] [2024-06-21 19:21:42,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242269489] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:21:42,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:21:42,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:21:42,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114107049] [2024-06-21 19:21:42,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:21:42,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:21:42,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:21:42,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:21:42,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:21:42,215 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-21 19:21:42,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 122 transitions, 835 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:21:42,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:21:42,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-21 19:21:42,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:21:42,669 INFO L124 PetriNetUnfolderBase]: 287/636 cut-off events. [2024-06-21 19:21:42,669 INFO L125 PetriNetUnfolderBase]: For 60623/60623 co-relation queries the response was YES. [2024-06-21 19:21:42,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3182 conditions, 636 events. 287/636 cut-off events. For 60623/60623 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3372 event pairs, 55 based on Foata normal form. 6/641 useless extension candidates. Maximal degree in co-relation 3099. Up to 467 conditions per place. [2024-06-21 19:21:42,674 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 100 selfloop transitions, 16 changer transitions 20/140 dead transitions. [2024-06-21 19:21:42,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 140 transitions, 1151 flow [2024-06-21 19:21:42,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:21:42,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:21:42,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-21 19:21:42,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4310850439882698 [2024-06-21 19:21:42,675 INFO L175 Difference]: Start difference. First operand has 203 places, 122 transitions, 835 flow. Second operand 11 states and 147 transitions. [2024-06-21 19:21:42,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 140 transitions, 1151 flow [2024-06-21 19:21:42,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 140 transitions, 1066 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-21 19:21:42,809 INFO L231 Difference]: Finished difference. Result has 199 places, 112 transitions, 738 flow [2024-06-21 19:21:42,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=752, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=738, PETRI_PLACES=199, PETRI_TRANSITIONS=112} [2024-06-21 19:21:42,809 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 169 predicate places. [2024-06-21 19:21:42,809 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 112 transitions, 738 flow [2024-06-21 19:21:42,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:21:42,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:21:42,809 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:21:42,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-21 19:21:42,810 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:21:42,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:21:42,810 INFO L85 PathProgramCache]: Analyzing trace with hash 35347310, now seen corresponding path program 2 times [2024-06-21 19:21:42,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:21:42,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534598702] [2024-06-21 19:21:42,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:21:42,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:21:42,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:21:45,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:21:45,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:21:45,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534598702] [2024-06-21 19:21:45,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534598702] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:21:45,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:21:45,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:21:45,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596570591] [2024-06-21 19:21:45,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:21:45,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:21:45,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:21:45,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:21:45,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:21:46,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-21 19:21:46,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 112 transitions, 738 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:21:46,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:21:46,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-21 19:21:46,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:21:46,571 INFO L124 PetriNetUnfolderBase]: 253/573 cut-off events. [2024-06-21 19:21:46,571 INFO L125 PetriNetUnfolderBase]: For 58920/58920 co-relation queries the response was YES. [2024-06-21 19:21:46,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2908 conditions, 573 events. 253/573 cut-off events. For 58920/58920 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2963 event pairs, 55 based on Foata normal form. 6/578 useless extension candidates. Maximal degree in co-relation 2827. Up to 393 conditions per place. [2024-06-21 19:21:46,576 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 81 selfloop transitions, 30 changer transitions 11/126 dead transitions. [2024-06-21 19:21:46,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 126 transitions, 1014 flow [2024-06-21 19:21:46,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:21:46,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:21:46,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-21 19:21:46,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4281524926686217 [2024-06-21 19:21:46,577 INFO L175 Difference]: Start difference. First operand has 199 places, 112 transitions, 738 flow. Second operand 11 states and 146 transitions. [2024-06-21 19:21:46,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 126 transitions, 1014 flow [2024-06-21 19:21:46,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 126 transitions, 966 flow, removed 7 selfloop flow, removed 13 redundant places. [2024-06-21 19:21:46,679 INFO L231 Difference]: Finished difference. Result has 186 places, 108 transitions, 735 flow [2024-06-21 19:21:46,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=690, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=735, PETRI_PLACES=186, PETRI_TRANSITIONS=108} [2024-06-21 19:21:46,680 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 156 predicate places. [2024-06-21 19:21:46,680 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 108 transitions, 735 flow [2024-06-21 19:21:46,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:21:46,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:21:46,680 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:21:46,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-21 19:21:46,680 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:21:46,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:21:46,680 INFO L85 PathProgramCache]: Analyzing trace with hash 2141837550, now seen corresponding path program 3 times [2024-06-21 19:21:46,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:21:46,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797965626] [2024-06-21 19:21:46,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:21:46,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:21:46,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:21:48,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:21:48,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:21:48,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797965626] [2024-06-21 19:21:48,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797965626] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:21:48,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:21:48,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:21:48,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237275754] [2024-06-21 19:21:48,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:21:48,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:21:48,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:21:48,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:21:48,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:21:49,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-21 19:21:49,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 108 transitions, 735 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:21:49,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:21:49,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-21 19:21:49,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:21:49,509 INFO L124 PetriNetUnfolderBase]: 229/525 cut-off events. [2024-06-21 19:21:49,509 INFO L125 PetriNetUnfolderBase]: For 37080/37080 co-relation queries the response was YES. [2024-06-21 19:21:49,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2320 conditions, 525 events. 229/525 cut-off events. For 37080/37080 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2673 event pairs, 42 based on Foata normal form. 6/530 useless extension candidates. Maximal degree in co-relation 2245. Up to 386 conditions per place. [2024-06-21 19:21:49,512 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 85 selfloop transitions, 19 changer transitions 14/122 dead transitions. [2024-06-21 19:21:49,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 122 transitions, 1003 flow [2024-06-21 19:21:49,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:21:49,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:21:49,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-21 19:21:49,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-21 19:21:49,513 INFO L175 Difference]: Start difference. First operand has 186 places, 108 transitions, 735 flow. Second operand 11 states and 143 transitions. [2024-06-21 19:21:49,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 122 transitions, 1003 flow [2024-06-21 19:21:49,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 122 transitions, 937 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-21 19:21:49,575 INFO L231 Difference]: Finished difference. Result has 182 places, 102 transitions, 683 flow [2024-06-21 19:21:49,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=669, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=683, PETRI_PLACES=182, PETRI_TRANSITIONS=102} [2024-06-21 19:21:49,575 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 152 predicate places. [2024-06-21 19:21:49,575 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 102 transitions, 683 flow [2024-06-21 19:21:49,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:21:49,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:21:49,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:21:49,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-21 19:21:49,576 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:21:49,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:21:49,576 INFO L85 PathProgramCache]: Analyzing trace with hash -2130618642, now seen corresponding path program 4 times [2024-06-21 19:21:49,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:21:49,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909834221] [2024-06-21 19:21:49,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:21:49,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:21:49,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:21:51,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:21:51,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:21:51,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909834221] [2024-06-21 19:21:51,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909834221] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:21:51,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:21:51,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:21:51,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771594222] [2024-06-21 19:21:51,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:21:51,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:21:51,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:21:51,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:21:51,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:21:52,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-21 19:21:52,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 102 transitions, 683 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:21:52,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:21:52,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-21 19:21:52,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:21:52,367 INFO L124 PetriNetUnfolderBase]: 218/504 cut-off events. [2024-06-21 19:21:52,367 INFO L125 PetriNetUnfolderBase]: For 34782/34782 co-relation queries the response was YES. [2024-06-21 19:21:52,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2212 conditions, 504 events. 218/504 cut-off events. For 34782/34782 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2542 event pairs, 36 based on Foata normal form. 6/509 useless extension candidates. Maximal degree in co-relation 2139. Up to 342 conditions per place. [2024-06-21 19:21:52,390 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 79 selfloop transitions, 15 changer transitions 20/118 dead transitions. [2024-06-21 19:21:52,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 118 transitions, 947 flow [2024-06-21 19:21:52,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:21:52,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:21:52,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-21 19:21:52,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4222873900293255 [2024-06-21 19:21:52,392 INFO L175 Difference]: Start difference. First operand has 182 places, 102 transitions, 683 flow. Second operand 11 states and 144 transitions. [2024-06-21 19:21:52,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 118 transitions, 947 flow [2024-06-21 19:21:52,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 118 transitions, 901 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-21 19:21:52,450 INFO L231 Difference]: Finished difference. Result has 174 places, 93 transitions, 626 flow [2024-06-21 19:21:52,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=637, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=626, PETRI_PLACES=174, PETRI_TRANSITIONS=93} [2024-06-21 19:21:52,451 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 144 predicate places. [2024-06-21 19:21:52,451 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 93 transitions, 626 flow [2024-06-21 19:21:52,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:21:52,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:21:52,452 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:21:52,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-21 19:21:52,453 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:21:52,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:21:52,454 INFO L85 PathProgramCache]: Analyzing trace with hash -1300356392, now seen corresponding path program 5 times [2024-06-21 19:21:52,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:21:52,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217366260] [2024-06-21 19:21:52,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:21:52,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:21:52,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:21:54,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:21:54,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:21:54,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217366260] [2024-06-21 19:21:54,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217366260] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:21:54,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:21:54,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:21:54,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785285535] [2024-06-21 19:21:54,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:21:54,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:21:54,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:21:54,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:21:54,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:21:55,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-21 19:21:55,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 93 transitions, 626 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:21:55,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:21:55,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-21 19:21:55,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:21:55,506 INFO L124 PetriNetUnfolderBase]: 192/450 cut-off events. [2024-06-21 19:21:55,506 INFO L125 PetriNetUnfolderBase]: For 31492/31492 co-relation queries the response was YES. [2024-06-21 19:21:55,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2025 conditions, 450 events. 192/450 cut-off events. For 31492/31492 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2182 event pairs, 25 based on Foata normal form. 6/455 useless extension candidates. Maximal degree in co-relation 1955. Up to 272 conditions per place. [2024-06-21 19:21:55,509 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 69 selfloop transitions, 22 changer transitions 13/108 dead transitions. [2024-06-21 19:21:55,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 108 transitions, 868 flow [2024-06-21 19:21:55,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:21:55,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:21:55,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-21 19:21:55,510 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4252199413489736 [2024-06-21 19:21:55,510 INFO L175 Difference]: Start difference. First operand has 174 places, 93 transitions, 626 flow. Second operand 11 states and 145 transitions. [2024-06-21 19:21:55,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 108 transitions, 868 flow [2024-06-21 19:21:55,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 108 transitions, 822 flow, removed 8 selfloop flow, removed 13 redundant places. [2024-06-21 19:21:55,558 INFO L231 Difference]: Finished difference. Result has 160 places, 86 transitions, 591 flow [2024-06-21 19:21:55,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=580, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=591, PETRI_PLACES=160, PETRI_TRANSITIONS=86} [2024-06-21 19:21:55,558 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 130 predicate places. [2024-06-21 19:21:55,559 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 86 transitions, 591 flow [2024-06-21 19:21:55,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:21:55,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:21:55,559 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:21:55,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-21 19:21:55,559 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:21:55,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:21:55,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1489651632, now seen corresponding path program 6 times [2024-06-21 19:21:55,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:21:55,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904141675] [2024-06-21 19:21:55,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:21:55,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:21:55,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:21:58,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:21:58,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:21:58,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904141675] [2024-06-21 19:21:58,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904141675] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:21:58,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:21:58,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:21:58,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312169096] [2024-06-21 19:21:58,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:21:58,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:21:58,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:21:58,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:21:58,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:21:58,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-21 19:21:58,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 86 transitions, 591 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:21:58,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:21:58,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-21 19:21:58,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:21:58,600 INFO L124 PetriNetUnfolderBase]: 174/412 cut-off events. [2024-06-21 19:21:58,601 INFO L125 PetriNetUnfolderBase]: For 24516/24516 co-relation queries the response was YES. [2024-06-21 19:21:58,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1850 conditions, 412 events. 174/412 cut-off events. For 24516/24516 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1936 event pairs, 34 based on Foata normal form. 6/417 useless extension candidates. Maximal degree in co-relation 1787. Up to 268 conditions per place. [2024-06-21 19:21:58,603 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 62 selfloop transitions, 18 changer transitions 16/100 dead transitions. [2024-06-21 19:21:58,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 100 transitions, 815 flow [2024-06-21 19:21:58,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:21:58,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:21:58,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-21 19:21:58,603 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-21 19:21:58,603 INFO L175 Difference]: Start difference. First operand has 160 places, 86 transitions, 591 flow. Second operand 11 states and 143 transitions. [2024-06-21 19:21:58,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 100 transitions, 815 flow [2024-06-21 19:21:58,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 100 transitions, 759 flow, removed 6 selfloop flow, removed 14 redundant places. [2024-06-21 19:21:58,644 INFO L231 Difference]: Finished difference. Result has 150 places, 77 transitions, 518 flow [2024-06-21 19:21:58,644 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=535, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=518, PETRI_PLACES=150, PETRI_TRANSITIONS=77} [2024-06-21 19:21:58,644 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 120 predicate places. [2024-06-21 19:21:58,644 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 77 transitions, 518 flow [2024-06-21 19:21:58,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:21:58,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:21:58,644 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:21:58,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-21 19:21:58,644 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:21:58,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:21:58,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1626087564, now seen corresponding path program 7 times [2024-06-21 19:21:58,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:21:58,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146774649] [2024-06-21 19:21:58,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:21:58,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:21:58,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:22:01,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:22:01,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:22:01,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146774649] [2024-06-21 19:22:01,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146774649] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:22:01,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:22:01,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:22:01,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636837130] [2024-06-21 19:22:01,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:22:01,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:22:01,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:22:01,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:22:01,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:22:01,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-21 19:22:01,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 77 transitions, 518 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:22:01,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:22:01,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-21 19:22:01,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:22:01,511 INFO L124 PetriNetUnfolderBase]: 160/381 cut-off events. [2024-06-21 19:22:01,511 INFO L125 PetriNetUnfolderBase]: For 19998/19998 co-relation queries the response was YES. [2024-06-21 19:22:01,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1680 conditions, 381 events. 160/381 cut-off events. For 19998/19998 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1744 event pairs, 33 based on Foata normal form. 6/386 useless extension candidates. Maximal degree in co-relation 1622. Up to 258 conditions per place. [2024-06-21 19:22:01,513 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 60 selfloop transitions, 17 changer transitions 12/93 dead transitions. [2024-06-21 19:22:01,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 93 transitions, 734 flow [2024-06-21 19:22:01,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:22:01,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:22:01,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-21 19:22:01,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4222873900293255 [2024-06-21 19:22:01,514 INFO L175 Difference]: Start difference. First operand has 150 places, 77 transitions, 518 flow. Second operand 11 states and 144 transitions. [2024-06-21 19:22:01,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 93 transitions, 734 flow [2024-06-21 19:22:01,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 93 transitions, 660 flow, removed 4 selfloop flow, removed 20 redundant places. [2024-06-21 19:22:01,537 INFO L231 Difference]: Finished difference. Result has 135 places, 72 transitions, 458 flow [2024-06-21 19:22:01,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=458, PETRI_PLACES=135, PETRI_TRANSITIONS=72} [2024-06-21 19:22:01,537 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 105 predicate places. [2024-06-21 19:22:01,537 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 72 transitions, 458 flow [2024-06-21 19:22:01,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:22:01,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:22:01,537 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:22:01,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-21 19:22:01,537 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:22:01,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:22:01,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1619535244, now seen corresponding path program 8 times [2024-06-21 19:22:01,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:22:01,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577244348] [2024-06-21 19:22:01,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:22:01,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:22:01,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:22:04,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:22:04,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:22:04,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577244348] [2024-06-21 19:22:04,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577244348] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:22:04,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:22:04,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:22:04,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890493248] [2024-06-21 19:22:04,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:22:04,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:22:04,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:22:04,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:22:04,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:22:04,215 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-21 19:22:04,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 72 transitions, 458 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:22:04,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:22:04,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-21 19:22:04,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:22:04,505 INFO L124 PetriNetUnfolderBase]: 149/364 cut-off events. [2024-06-21 19:22:04,505 INFO L125 PetriNetUnfolderBase]: For 17546/17546 co-relation queries the response was YES. [2024-06-21 19:22:04,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1554 conditions, 364 events. 149/364 cut-off events. For 17546/17546 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1656 event pairs, 30 based on Foata normal form. 6/369 useless extension candidates. Maximal degree in co-relation 1504. Up to 220 conditions per place. [2024-06-21 19:22:04,507 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 46 selfloop transitions, 3 changer transitions 36/89 dead transitions. [2024-06-21 19:22:04,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 89 transitions, 668 flow [2024-06-21 19:22:04,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:22:04,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:22:04,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-21 19:22:04,508 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4222873900293255 [2024-06-21 19:22:04,508 INFO L175 Difference]: Start difference. First operand has 135 places, 72 transitions, 458 flow. Second operand 11 states and 144 transitions. [2024-06-21 19:22:04,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 89 transitions, 668 flow [2024-06-21 19:22:04,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 89 transitions, 628 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-21 19:22:04,527 INFO L231 Difference]: Finished difference. Result has 131 places, 52 transitions, 310 flow [2024-06-21 19:22:04,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=418, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=310, PETRI_PLACES=131, PETRI_TRANSITIONS=52} [2024-06-21 19:22:04,527 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 101 predicate places. [2024-06-21 19:22:04,527 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 52 transitions, 310 flow [2024-06-21 19:22:04,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:22:04,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:22:04,527 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:22:04,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-21 19:22:04,527 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:22:04,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:22:04,528 INFO L85 PathProgramCache]: Analyzing trace with hash -360625552, now seen corresponding path program 9 times [2024-06-21 19:22:04,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:22:04,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86470172] [2024-06-21 19:22:04,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:22:04,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:22:04,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:22:07,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:22:07,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:22:07,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86470172] [2024-06-21 19:22:07,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86470172] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:22:07,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:22:07,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:22:07,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445229996] [2024-06-21 19:22:07,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:22:07,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:22:07,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:22:07,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:22:07,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:22:07,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-21 19:22:07,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 52 transitions, 310 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:22:07,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:22:07,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-21 19:22:07,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:22:07,894 INFO L124 PetriNetUnfolderBase]: 113/266 cut-off events. [2024-06-21 19:22:07,894 INFO L125 PetriNetUnfolderBase]: For 15841/15841 co-relation queries the response was YES. [2024-06-21 19:22:07,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1222 conditions, 266 events. 113/266 cut-off events. For 15841/15841 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1064 event pairs, 30 based on Foata normal form. 6/272 useless extension candidates. Maximal degree in co-relation 1174. Up to 195 conditions per place. [2024-06-21 19:22:07,895 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 39 selfloop transitions, 7 changer transitions 14/64 dead transitions. [2024-06-21 19:22:07,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 64 transitions, 456 flow [2024-06-21 19:22:07,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:22:07,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:22:07,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 134 transitions. [2024-06-21 19:22:07,896 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3602150537634409 [2024-06-21 19:22:07,896 INFO L175 Difference]: Start difference. First operand has 131 places, 52 transitions, 310 flow. Second operand 12 states and 134 transitions. [2024-06-21 19:22:07,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 64 transitions, 456 flow [2024-06-21 19:22:07,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 64 transitions, 420 flow, removed 11 selfloop flow, removed 18 redundant places. [2024-06-21 19:22:07,907 INFO L231 Difference]: Finished difference. Result has 100 places, 47 transitions, 265 flow [2024-06-21 19:22:07,907 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=265, PETRI_PLACES=100, PETRI_TRANSITIONS=47} [2024-06-21 19:22:07,908 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 70 predicate places. [2024-06-21 19:22:07,908 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 47 transitions, 265 flow [2024-06-21 19:22:07,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:22:07,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:22:07,908 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:22:07,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-21 19:22:07,908 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:22:07,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:22:07,908 INFO L85 PathProgramCache]: Analyzing trace with hash -901570178, now seen corresponding path program 10 times [2024-06-21 19:22:07,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:22:07,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488389519] [2024-06-21 19:22:07,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:22:07,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:22:07,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:22:10,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:22:10,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:22:10,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488389519] [2024-06-21 19:22:10,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488389519] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:22:10,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:22:10,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:22:10,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264330965] [2024-06-21 19:22:10,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:22:10,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:22:10,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:22:10,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:22:10,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:22:10,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-21 19:22:10,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 47 transitions, 265 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:22:10,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:22:10,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-21 19:22:10,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:22:10,777 INFO L124 PetriNetUnfolderBase]: 104/243 cut-off events. [2024-06-21 19:22:10,777 INFO L125 PetriNetUnfolderBase]: For 9182/9182 co-relation queries the response was YES. [2024-06-21 19:22:10,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1035 conditions, 243 events. 104/243 cut-off events. For 9182/9182 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 936 event pairs, 30 based on Foata normal form. 6/249 useless extension candidates. Maximal degree in co-relation 997. Up to 143 conditions per place. [2024-06-21 19:22:10,778 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 30 selfloop transitions, 14 changer transitions 11/59 dead transitions. [2024-06-21 19:22:10,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 59 transitions, 401 flow [2024-06-21 19:22:10,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:22:10,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:22:10,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-21 19:22:10,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41055718475073316 [2024-06-21 19:22:10,779 INFO L175 Difference]: Start difference. First operand has 100 places, 47 transitions, 265 flow. Second operand 11 states and 140 transitions. [2024-06-21 19:22:10,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 59 transitions, 401 flow [2024-06-21 19:22:10,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 59 transitions, 377 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-21 19:22:10,786 INFO L231 Difference]: Finished difference. Result has 91 places, 43 transitions, 252 flow [2024-06-21 19:22:10,786 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=252, PETRI_PLACES=91, PETRI_TRANSITIONS=43} [2024-06-21 19:22:10,786 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 61 predicate places. [2024-06-21 19:22:10,786 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 43 transitions, 252 flow [2024-06-21 19:22:10,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:22:10,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:22:10,786 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:22:10,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-21 19:22:10,786 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:22:10,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:22:10,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1601760656, now seen corresponding path program 11 times [2024-06-21 19:22:10,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:22:10,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863153788] [2024-06-21 19:22:10,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:22:10,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:22:10,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:22:13,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:22:13,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:22:13,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863153788] [2024-06-21 19:22:13,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863153788] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:22:13,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:22:13,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:22:13,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952391981] [2024-06-21 19:22:13,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:22:13,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:22:13,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:22:13,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:22:13,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:22:13,692 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-21 19:22:13,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 43 transitions, 252 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:22:13,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:22:13,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-21 19:22:13,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:22:14,032 INFO L124 PetriNetUnfolderBase]: 96/225 cut-off events. [2024-06-21 19:22:14,032 INFO L125 PetriNetUnfolderBase]: For 7058/7058 co-relation queries the response was YES. [2024-06-21 19:22:14,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 950 conditions, 225 events. 96/225 cut-off events. For 7058/7058 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 825 event pairs, 30 based on Foata normal form. 6/231 useless extension candidates. Maximal degree in co-relation 916. Up to 145 conditions per place. [2024-06-21 19:22:14,033 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 28 selfloop transitions, 12 changer transitions 11/55 dead transitions. [2024-06-21 19:22:14,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 55 transitions, 380 flow [2024-06-21 19:22:14,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:22:14,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:22:14,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-21 19:22:14,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41055718475073316 [2024-06-21 19:22:14,034 INFO L175 Difference]: Start difference. First operand has 91 places, 43 transitions, 252 flow. Second operand 11 states and 140 transitions. [2024-06-21 19:22:14,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 55 transitions, 380 flow [2024-06-21 19:22:14,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 55 transitions, 344 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-21 19:22:14,040 INFO L231 Difference]: Finished difference. Result has 85 places, 39 transitions, 223 flow [2024-06-21 19:22:14,040 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=223, PETRI_PLACES=85, PETRI_TRANSITIONS=39} [2024-06-21 19:22:14,040 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 55 predicate places. [2024-06-21 19:22:14,040 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 39 transitions, 223 flow [2024-06-21 19:22:14,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:22:14,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:22:14,040 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:22:14,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-21 19:22:14,041 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:22:14,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:22:14,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1095509588, now seen corresponding path program 12 times [2024-06-21 19:22:14,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:22:14,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660237698] [2024-06-21 19:22:14,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:22:14,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:22:14,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:22:17,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:22:17,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:22:17,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660237698] [2024-06-21 19:22:17,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660237698] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:22:17,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:22:17,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:22:17,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545859169] [2024-06-21 19:22:17,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:22:17,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:22:17,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:22:17,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:22:17,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:22:17,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-21 19:22:17,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 39 transitions, 223 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:22:17,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:22:17,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-21 19:22:17,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:22:17,964 INFO L124 PetriNetUnfolderBase]: 88/207 cut-off events. [2024-06-21 19:22:17,965 INFO L125 PetriNetUnfolderBase]: For 5606/5606 co-relation queries the response was YES. [2024-06-21 19:22:17,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 859 conditions, 207 events. 88/207 cut-off events. For 5606/5606 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 733 event pairs, 30 based on Foata normal form. 6/213 useless extension candidates. Maximal degree in co-relation 828. Up to 123 conditions per place. [2024-06-21 19:22:17,965 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 25 selfloop transitions, 12 changer transitions 10/51 dead transitions. [2024-06-21 19:22:17,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 51 transitions, 343 flow [2024-06-21 19:22:17,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:22:17,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:22:17,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-21 19:22:17,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4046920821114369 [2024-06-21 19:22:17,966 INFO L175 Difference]: Start difference. First operand has 85 places, 39 transitions, 223 flow. Second operand 11 states and 138 transitions. [2024-06-21 19:22:17,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 51 transitions, 343 flow [2024-06-21 19:22:17,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 51 transitions, 311 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-21 19:22:17,971 INFO L231 Difference]: Finished difference. Result has 79 places, 36 transitions, 204 flow [2024-06-21 19:22:17,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=204, PETRI_PLACES=79, PETRI_TRANSITIONS=36} [2024-06-21 19:22:17,971 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 49 predicate places. [2024-06-21 19:22:17,971 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 36 transitions, 204 flow [2024-06-21 19:22:17,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:22:17,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:22:17,972 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:22:17,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-21 19:22:17,972 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:22:17,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:22:17,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1101016118, now seen corresponding path program 13 times [2024-06-21 19:22:17,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:22:17,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668590544] [2024-06-21 19:22:17,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:22:17,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:22:17,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:22:20,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:22:20,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:22:20,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668590544] [2024-06-21 19:22:20,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668590544] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:22:20,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:22:20,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:22:20,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766077149] [2024-06-21 19:22:20,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:22:20,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:22:20,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:22:20,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:22:20,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:22:20,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-21 19:22:20,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 36 transitions, 204 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:22:20,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:22:20,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-21 19:22:20,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:22:21,236 INFO L124 PetriNetUnfolderBase]: 81/194 cut-off events. [2024-06-21 19:22:21,236 INFO L125 PetriNetUnfolderBase]: For 4364/4364 co-relation queries the response was YES. [2024-06-21 19:22:21,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 784 conditions, 194 events. 81/194 cut-off events. For 4364/4364 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 661 event pairs, 28 based on Foata normal form. 6/200 useless extension candidates. Maximal degree in co-relation 756. Up to 105 conditions per place. [2024-06-21 19:22:21,237 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 21 selfloop transitions, 8 changer transitions 16/49 dead transitions. [2024-06-21 19:22:21,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 49 transitions, 322 flow [2024-06-21 19:22:21,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:22:21,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:22:21,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-21 19:22:21,238 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4046920821114369 [2024-06-21 19:22:21,238 INFO L175 Difference]: Start difference. First operand has 79 places, 36 transitions, 204 flow. Second operand 11 states and 138 transitions. [2024-06-21 19:22:21,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 49 transitions, 322 flow [2024-06-21 19:22:21,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 49 transitions, 292 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-21 19:22:21,241 INFO L231 Difference]: Finished difference. Result has 75 places, 30 transitions, 163 flow [2024-06-21 19:22:21,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=163, PETRI_PLACES=75, PETRI_TRANSITIONS=30} [2024-06-21 19:22:21,242 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 45 predicate places. [2024-06-21 19:22:21,242 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 30 transitions, 163 flow [2024-06-21 19:22:21,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:22:21,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:22:21,242 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:22:21,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-21 19:22:21,242 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:22:21,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:22:21,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1906924690, now seen corresponding path program 14 times [2024-06-21 19:22:21,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:22:21,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885606443] [2024-06-21 19:22:21,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:22:21,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:22:21,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:22:24,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:22:24,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:22:24,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885606443] [2024-06-21 19:22:24,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885606443] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:22:24,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:22:24,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:22:24,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026775586] [2024-06-21 19:22:24,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:22:24,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:22:24,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:22:24,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:22:24,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:22:24,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-21 19:22:24,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 30 transitions, 163 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:22:24,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:22:24,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-21 19:22:24,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:22:24,858 INFO L124 PetriNetUnfolderBase]: 68/163 cut-off events. [2024-06-21 19:22:24,858 INFO L125 PetriNetUnfolderBase]: For 3586/3586 co-relation queries the response was YES. [2024-06-21 19:22:24,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 670 conditions, 163 events. 68/163 cut-off events. For 3586/3586 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 525 event pairs, 28 based on Foata normal form. 6/169 useless extension candidates. Maximal degree in co-relation 644. Up to 95 conditions per place. [2024-06-21 19:22:24,859 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 20 selfloop transitions, 8 changer transitions 10/42 dead transitions. [2024-06-21 19:22:24,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 42 transitions, 265 flow [2024-06-21 19:22:24,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:22:24,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:22:24,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-21 19:22:24,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4096774193548387 [2024-06-21 19:22:24,859 INFO L175 Difference]: Start difference. First operand has 75 places, 30 transitions, 163 flow. Second operand 10 states and 127 transitions. [2024-06-21 19:22:24,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 42 transitions, 265 flow [2024-06-21 19:22:24,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 42 transitions, 237 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-21 19:22:24,862 INFO L231 Difference]: Finished difference. Result has 64 places, 27 transitions, 140 flow [2024-06-21 19:22:24,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=140, PETRI_PLACES=64, PETRI_TRANSITIONS=27} [2024-06-21 19:22:24,862 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 34 predicate places. [2024-06-21 19:22:24,862 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 27 transitions, 140 flow [2024-06-21 19:22:24,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:22:24,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:22:24,863 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:22:24,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-21 19:22:24,863 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:22:24,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:22:24,863 INFO L85 PathProgramCache]: Analyzing trace with hash -82268244, now seen corresponding path program 15 times [2024-06-21 19:22:24,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:22:24,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595940652] [2024-06-21 19:22:24,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:22:24,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:22:24,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:22:27,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:22:27,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:22:27,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595940652] [2024-06-21 19:22:27,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595940652] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:22:27,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:22:27,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:22:27,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837315930] [2024-06-21 19:22:27,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:22:27,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:22:27,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:22:27,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:22:27,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:22:27,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-21 19:22:27,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 27 transitions, 140 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:22:27,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:22:27,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-21 19:22:27,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:22:27,919 INFO L124 PetriNetUnfolderBase]: 46/117 cut-off events. [2024-06-21 19:22:27,919 INFO L125 PetriNetUnfolderBase]: For 1358/1358 co-relation queries the response was YES. [2024-06-21 19:22:27,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 408 conditions, 117 events. 46/117 cut-off events. For 1358/1358 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 302 event pairs, 13 based on Foata normal form. 6/123 useless extension candidates. Maximal degree in co-relation 387. Up to 44 conditions per place. [2024-06-21 19:22:27,919 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 16 selfloop transitions, 6 changer transitions 14/40 dead transitions. [2024-06-21 19:22:27,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 40 transitions, 240 flow [2024-06-21 19:22:27,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:22:27,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:22:27,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-21 19:22:27,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39589442815249265 [2024-06-21 19:22:27,920 INFO L175 Difference]: Start difference. First operand has 64 places, 27 transitions, 140 flow. Second operand 11 states and 135 transitions. [2024-06-21 19:22:27,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 40 transitions, 240 flow [2024-06-21 19:22:27,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 40 transitions, 218 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-21 19:22:27,921 INFO L231 Difference]: Finished difference. Result has 61 places, 22 transitions, 109 flow [2024-06-21 19:22:27,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=109, PETRI_PLACES=61, PETRI_TRANSITIONS=22} [2024-06-21 19:22:27,922 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 31 predicate places. [2024-06-21 19:22:27,922 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 22 transitions, 109 flow [2024-06-21 19:22:27,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:22:27,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:22:27,922 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:22:27,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-21 19:22:27,922 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:22:27,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:22:27,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1667746416, now seen corresponding path program 16 times [2024-06-21 19:22:27,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:22:27,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634880362] [2024-06-21 19:22:27,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:22:27,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:22:27,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:22:30,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:22:30,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:22:30,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634880362] [2024-06-21 19:22:30,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634880362] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:22:30,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:22:30,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:22:30,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781078392] [2024-06-21 19:22:30,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:22:30,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:22:30,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:22:30,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:22:30,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:22:30,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-21 19:22:30,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 22 transitions, 109 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:22:30,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:22:30,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-21 19:22:30,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:22:30,940 INFO L124 PetriNetUnfolderBase]: 19/58 cut-off events. [2024-06-21 19:22:30,940 INFO L125 PetriNetUnfolderBase]: For 516/516 co-relation queries the response was YES. [2024-06-21 19:22:30,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171 conditions, 58 events. 19/58 cut-off events. For 516/516 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 82 event pairs, 0 based on Foata normal form. 6/64 useless extension candidates. Maximal degree in co-relation 152. Up to 24 conditions per place. [2024-06-21 19:22:30,941 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 0 selfloop transitions, 0 changer transitions 29/29 dead transitions. [2024-06-21 19:22:30,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 29 transitions, 147 flow [2024-06-21 19:22:30,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:22:30,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:22:30,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-21 19:22:30,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36656891495601174 [2024-06-21 19:22:30,941 INFO L175 Difference]: Start difference. First operand has 61 places, 22 transitions, 109 flow. Second operand 11 states and 125 transitions. [2024-06-21 19:22:30,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 29 transitions, 147 flow [2024-06-21 19:22:30,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 29 transitions, 117 flow, removed 1 selfloop flow, removed 15 redundant places. [2024-06-21 19:22:30,942 INFO L231 Difference]: Finished difference. Result has 47 places, 0 transitions, 0 flow [2024-06-21 19:22:30,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=51, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=47, PETRI_TRANSITIONS=0} [2024-06-21 19:22:30,942 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 17 predicate places. [2024-06-21 19:22:30,942 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 0 transitions, 0 flow [2024-06-21 19:22:30,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:22:30,944 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-21 19:22:30,945 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-21 19:22:30,946 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-21 19:22:30,946 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-21 19:22:30,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-21 19:22:30,946 INFO L445 BasicCegarLoop]: Path program histogram: [20, 20, 16, 15, 10, 9, 8, 7, 6, 5, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:22:30,952 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-21 19:22:30,952 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-21 19:22:30,955 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-21 19:22:30,956 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-21 19:22:30,956 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.06 07:22:30 BasicIcfg [2024-06-21 19:22:30,956 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-21 19:22:30,957 INFO L158 Benchmark]: Toolchain (without parser) took 346087.35ms. Allocated memory was 155.2MB in the beginning and 1.3GB in the end (delta: 1.1GB). Free memory was 93.2MB in the beginning and 1.1GB in the end (delta: -970.9MB). Peak memory consumption was 146.8MB. Max. memory is 16.1GB. [2024-06-21 19:22:30,957 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 155.2MB. Free memory was 114.9MB in the beginning and 114.8MB in the end (delta: 132.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-21 19:22:30,957 INFO L158 Benchmark]: Witness Parser took 0.14ms. Allocated memory is still 155.2MB. Free memory is still 96.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-21 19:22:30,957 INFO L158 Benchmark]: CACSL2BoogieTranslator took 550.93ms. Allocated memory was 155.2MB in the beginning and 218.1MB in the end (delta: 62.9MB). Free memory was 92.8MB in the beginning and 181.9MB in the end (delta: -89.1MB). Peak memory consumption was 37.0MB. Max. memory is 16.1GB. [2024-06-21 19:22:30,958 INFO L158 Benchmark]: Boogie Procedure Inliner took 71.06ms. Allocated memory is still 218.1MB. Free memory was 181.9MB in the beginning and 178.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-21 19:22:30,958 INFO L158 Benchmark]: Boogie Preprocessor took 82.41ms. Allocated memory is still 218.1MB. Free memory was 178.9MB in the beginning and 174.5MB in the end (delta: 4.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-06-21 19:22:30,958 INFO L158 Benchmark]: RCFGBuilder took 625.68ms. Allocated memory is still 218.1MB. Free memory was 174.5MB in the beginning and 110.7MB in the end (delta: 63.8MB). Peak memory consumption was 62.9MB. Max. memory is 16.1GB. [2024-06-21 19:22:30,958 INFO L158 Benchmark]: TraceAbstraction took 344752.41ms. Allocated memory was 218.1MB in the beginning and 1.3GB in the end (delta: 1.1GB). Free memory was 110.7MB in the beginning and 1.1GB in the end (delta: -953.4MB). Peak memory consumption was 97.3MB. Max. memory is 16.1GB. [2024-06-21 19:22:30,959 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 155.2MB. Free memory was 114.9MB in the beginning and 114.8MB in the end (delta: 132.8kB). There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.14ms. Allocated memory is still 155.2MB. Free memory is still 96.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 550.93ms. Allocated memory was 155.2MB in the beginning and 218.1MB in the end (delta: 62.9MB). Free memory was 92.8MB in the beginning and 181.9MB in the end (delta: -89.1MB). Peak memory consumption was 37.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 71.06ms. Allocated memory is still 218.1MB. Free memory was 181.9MB in the beginning and 178.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 82.41ms. Allocated memory is still 218.1MB. Free memory was 178.9MB in the beginning and 174.5MB in the end (delta: 4.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 625.68ms. Allocated memory is still 218.1MB. Free memory was 174.5MB in the beginning and 110.7MB in the end (delta: 63.8MB). Peak memory consumption was 62.9MB. Max. memory is 16.1GB. * TraceAbstraction took 344752.41ms. Allocated memory was 218.1MB in the beginning and 1.3GB in the end (delta: 1.1GB). Free memory was 110.7MB in the beginning and 1.1GB in the end (delta: -953.4MB). Peak memory consumption was 97.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 826]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 827]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 50 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 344.7s, OverallIterations: 140, TraceHistogramMax: 1, PathProgramHistogramMax: 20, EmptinessCheckTime: 0.0s, AutomataDifference: 84.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 7090 SdHoareTripleChecker+Valid, 40.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5841 mSDsluCounter, 1899 SdHoareTripleChecker+Invalid, 35.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1428 mSDsCounter, 1620 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 52836 IncrementalHoareTripleChecker+Invalid, 54456 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1620 mSolverCounterUnsat, 471 mSDtfsCounter, 52836 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1436 GetRequests, 0 SyntacticMatches, 6 SemanticMatches, 1430 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1943 ImplicationChecksByTransitivity, 57.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1738occurred in iteration=68, InterpolantAutomatonStates: 1328, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 2.3s SatisfiabilityAnalysisTime, 256.3s InterpolantComputationTime, 2283 NumberOfCodeBlocks, 2283 NumberOfCodeBlocksAsserted, 140 NumberOfCheckSat, 2143 ConstructedInterpolants, 0 QuantifiedInterpolants, 129025 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 140 InterpolantComputations, 140 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-21 19:22:31,143 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE